CVS Health Super Green Tea Extract 250 mg Review
This CVS Health dietary supplement is sold as Super Green Tea Extract 250 mg in softgel form, with 90 softgels and 90 servings per container. Each serving is one softgel. According to the supplement facts, one serving provides 5 calories, 250 mg of green tea (Camellia sinensis) leaf extract, and 50 mg of caffeine. Daily Value is not established for these ingredients. The suggested use is one softgel three times daily with food, as a dietary supplement. The product details list the brand as CVS Health, the form as softgel, the UPC as 050428424131, and the DSLD ID as 82369. The warnings state that the product contains soy and should be kept out of the reach of children. Pregnant or nursing women, individuals taking medication, and persons with a health condition should consult a physician before using it. A caffeine warning notes that each softgel contains caffeine equivalent to approximately 2 cups of coffee. The product is safety-sealed, and buyers should not use it if the printed seal under the cap is cut, torn, or missing. The page links to the FDA Dietary Supplement Label Database for official label information and offers a drug interaction check.
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Study, Trial or Testing Result Summary
Members Only80 human studies · 41 improved
At the daily amount here, about 750 milligrams of green tea extract and 150 milligrams of caffeine, both main ingredients are at or above the doses used in studies. A review of 111 trials in adults with overweight or obesity found green tea gave a small weight loss of about 1.25 kilograms, though certainty was low [1]. Another review of 59 trials found green tea extract lowered body weight, body mass index and body fat percentage [2]. In 102 women with belly fat, about 857 milligrams a day for 12 weeks led to weight loss and a smaller waist [3]. In 30 overweight women doing endurance training, 500 milligrams daily gave greater drops in weight and body fat than placebo [4]. Not all trials in women agreed: 78 obese women saw no extra benefit [5], and in postmenopausal women who walked, results matched placebo [6]. For caffeine, a review of 13 trials linked more caffeine to greater drops in weight and body fat [7], and a coffee blend with about 121 milligrams of caffeine lowered body fat [8]. In women with obesity doing interval training, caffeine reduced body fat about as much as training alone [9]. Green tea with caffeine did not stop weight regain after weight loss [10]. Animal and cell studies are never counted.
See all 80 studies →Hide the studies
- Across 111 trials with 6171 adults with overweight or obesity, green tea supplements led to a small weight loss of about 1.25 kg versus controls, though the certainty of evidence was low.Comparative effects of nutraceuticals on body weight in adults with overweight or obesity: A systematic review and netwo…
- In 59 trials with 3802 people, green tea extract lowered body weight, BMI, body fat percentage and an oxidative stress marker, and raised adiponectin and antioxidant capacity, but did not change fat mass, leptin or ghrelin.The effects of green tea extract supplementation on body composition, obesity-related hormones and oxidative stress mark…
- In a review of 21 studies with 2875 people, green tea (three studies) showed no significant effect on keeping weight off, unlike higher protein intake.Dietary Strategies for Weight Loss Maintenance.
- In 15 trials with 1818 overweight and obese women, green tea lowered total cholesterol by about 4.5 mg/dl and LDL cholesterol by about 4.5 mg/dl, with larger triglyceride drops in women with high baseline levels.Effects of green tea on lipid profile in overweight and obese women.
- Across 13 randomized trials with 606 people, more caffeine intake was linked to greater reductions in weight, body mass index and body fat, with each doubling of intake giving about 17 to 28 percent more reduction.The effects of caffeine intake on weight loss: a systematic review and dos-response meta-analysis of randomized controll…
- A pooled analysis of randomized trials found green tea lowered body weight by about 1.8 kg and BMI by 0.65 kg/m2, with waist reductions at 800 mg a day or more.The effect of green tea supplementation on obesity: A systematic review and dose-response meta-analysis of randomized co…
- A network analysis of 36 trials in people with overweight or obesity ranked catechin-rich green tea plus inulin among the better diet treatments for weight loss in one of nine networks.Diet Therapeutics Interventions for Obesity: A Systematic Review and Network Meta-Analysis.
- In 10 randomized trials in people with overweight or obesity, green tea added to exercise gave a small extra reduction in weight, BMI and fat versus exercise alone, with no extra benefit on blood fats.Does green tea catechin enhance weight-loss effect of exercise training in overweight and obese individuals? a systemati…
- A review of 32 studies found no consistent effect of green tea or other plant extracts on reducing hunger or increasing fullness in adults with overweight or obesity.Appetite-Suppressing and Satiety-Increasing Bioactive Phytochemicals: A Systematic Review.
- A review of 29 animal and human studies found green tea lowered cholesterol and blood fats in obese animals, but was not shown to be effective for controlling blood fats in obese people.Potential therapeutic effects of green tea on obese lipid profile - a systematic review.
- A review of diet trials in adults with asthma noted caffeine raised lung function (FEV1) but did not report weight outcomes for caffeine, so it says little about weight management.Diet effects in the asthma treatment: A systematic review.
- In 294 adults with abdominal obesity, a green-Mediterranean diet that included green tea, walnuts and a plant shake for 18 months cut liver fat nearly twice as much as other healthy diets.Effect of green-Mediterranean diet on intrahepatic fat: the DIRECT PLUS randomised controlled trial.
- Over 18 months, a Mediterranean diet with green tea and a Mankai plant shake raised fasting ghrelin more than a healthy diet, and in men this rise was linked to less visceral fat, but the green tea effect was not separated out.Diet-induced Fasting Ghrelin Elevation Reflects the Recovery of Insulin Sensitivity and Visceral Adiposity Regression.
- In a randomized trial of 294 adults with abdominal obesity or high cholesterol, a Mediterranean-style diet that included daily green tea, along with Mankai plant and walnuts, produced stepwise improvements in body weight, though the green tea effect cannot be separated from the rest of the diet and the daily tea amount and study length were not stated.The effects of the Green-Mediterranean diet on cardiometabolic health are linked to gut microbiome modifications: a rand…
- In 294 adults, a green-Mediterranean diet including green tea for 18 months roughly doubled visceral belly fat loss compared with other healthy diets, with similar modest weight loss.The effect of high-polyphenol Mediterranean diet on visceral adiposity: the DIRECT PLUS randomized controlled trial.
- In an 18-month trial of 284 adults with abdominal obesity, a Mediterranean diet with green tea (3-4 cups daily), a green shake and walnuts slowed age-related brain shrinkage in people 50 and older compared with healthy dietary guidelines.The effect of a high-polyphenol Mediterranean diet (Green-MED) combined with physical activity on age-related brain atro…
- In a post-hoc analysis of an 18-month diet trial, people whose blood sugar control improved had a smaller rise in brain-age markers, and higher green tea and Mankai intake was linked to a more youthful brain age beyond weight loss.Glycemic control contributes to the neuroprotective effects of Mediterranean and green-Mediterranean diets on brain age:…
- In 240 Japanese women and men with belly-fat obesity, 12 weeks of green tea with 583 mg catechins a day reduced body weight, body fat, waist size and LDL cholesterol more than a 96 mg catechin control drink.A green tea extract high in catechins reduces body fat and cardiovascular risks in humans.
- In 182 moderately overweight Chinese adults, 90 days of green tea with 886 mg catechins a day cut waist size by 1.9 cm, body weight by 1.2 kg and belly fat area compared with a control drink.Effects of catechin enriched green tea on body composition.
- In 167 overweight adults over 6 months, an herbal ephedra and caffeine supplement led to greater weight loss than placebo (5.3 kg vs 2.6 kg) and greater body fat loss, with more dry mouth, heartburn and insomnia.Herbal ephedra/caffeine for weight loss: a 6-month randomized safety and efficacy trial.
- In 142 people after weight-loss surgery, ephedrine plus caffeine for 27 weeks reduced the drop in resting energy burn and led to greater weight loss than placebo, with anxiety, dizziness, insomnia and tremors the most common side effects.Sympathomimetic increases resting energy expenditure following bariatric surgery: A randomized controlled clinical trial…
- In 132 overweight and obese adults who exercised, 12 weeks of a drink with about 625 mg catechins a day reduced abdominal fat and triglycerides more than control, but body weight and total fat mass did not differ significantly.Green tea catechin consumption enhances exercise-induced abdominal fat loss in overweight and obese adults.
- In 104 overweight adults who had lost 5 to 10 percent of body weight, green tea containing 573 mg of catechins daily for 13 weeks did not reduce weight regain compared with placebo, and high habitual caffeine intake was linked to more regain on green tea.Effects of green tea on weight maintenance after body-weight loss.
- In 103 overweight or obese women over 12 weeks, a mixed flavonoid supplement containing green tea leaf extract raised urine plant-compound levels but did not change inflammation or oxidative stress markers, and weight was not reported as an outcome.Influence of Ingesting a Flavonoid-Rich Supplement on the Metabolome and Concentration of Urine Phenolics in Overweight/…
- In 102 women with central obesity, 856.8 mg a day of green tea extract for 12 weeks produced significant weight loss and smaller waist size, with lower total cholesterol and LDL cholesterol, compared with placebo.Therapeutic effect of high-dose green tea extract on weight reduction: A randomized, double-blind, placebo-controlled cl…
- In 91 overweight adults over 12 weeks, a blend containing green tea extract plus a calorie-restricted diet produced 2.26 kg weight loss versus 0.56 kg with placebo, along with greater fat mass and waist reductions.IQP-GC-101 reduces body weight and body fat mass: a randomized, double-blind, placebo-controlled study.
- In 90 adults after weight loss, autologous fecal microbiota transplantation reduced weight regain only in the group following a green-Mediterranean diet that included green tea, with no significant difference across all groups.Effects of Diet-Modulated Autologous Fecal Microbiota Transplantation on Weight Regain.
- In 78 obese women over 12 weeks, green tea extract taken three times daily did not reduce body weight, body mass index or waist size more than placebo.Effect of green tea extract on obese women: a randomized, double-blind, placebo-controlled clinical trial.
- In 77 young adults with Down syndrome over 12 months, the green tea compound epigallocatechin gallate prevented the weight gain seen with placebo and modestly reduced weight and body fat in males.Effect of epigallocatechin gallate on the body composition and lipid profile of down syndrome individuals: Implications …
- In 68 overweight adults over 12 weeks, a thermogenic supplement with caffeine caused no meaningful change in body weight or composition, though it may have raised energy burn and reduced hunger.An Examination of a Novel Weight Loss Supplement on Anthropometry and Indices of Cardiovascular Disease Risk.
- In 67 overweight men and women over 8 weeks, a herbal supplement with 240 mg caffeine daily led to more weight loss than placebo (4.0 kg vs 0.8 kg), with 23% of the treated group withdrawing because of possible side effects.An herbal supplement containing Ma Huang-Guarana for weight loss: a randomized, double-blind trial.
- In 62 girls aged 6 to 10 with obesity, 400 mg daily of decaffeinated green tea polyphenols for 12 weeks caused no adverse effects and no significant differences in most blood measures compared with placebo, though uric acid decreased.Decaffeinated green tea polyphenols supplementation had no adverse health effects in girls with obesity: a randomized co…
- In a randomized trial of 60 obese Thai adults on a set 3-meal diet for 12 weeks, green tea led to greater weight loss than placebo at weeks 8 and 12, with higher energy burn at rest and changes in fat burning.Effectiveness of green tea on weight reduction in obese Thais: A randomized, controlled trial.
- In 60 healthy Japanese adults over 12 weeks, a green tea and citrus polyphenol supplement containing 146 mg EGCG prevented weight gain and reduced body mass index compared with placebo, with the effect stronger in people under 50.The combined effect of green tea and α-glucosyl hesperidin in preventing obesity: a randomized placebo-controlled clinic…
- In 59 adults with excess weight, 200 mL of green tea kombucha daily for 10 weeks with calorie restriction did not add to weight loss, but it lowered some inflammation markers.Green Tea Kombucha Impacts Inflammation and Salivary Microbiota in Individuals with Excess Body Weight: A Randomized Con…
- In a 12-week placebo-controlled trial of 58 adults, green tea capsules with more than 0.56 g EGCG daily did not change body composition or gut bacteria compared with placebo.Long-Term Green Tea Supplementation Does Not Change the Human Gut Microbiota.
- In 57 overweight young men over 6 weeks, green tea consumption alone lowered body mass index, body fat, total cholesterol and bad cholesterol, though combining it with aerobic exercise gave the best results.The Effect of Six-Week Aerobic Exercise Combined with ease max Incr2Green Tea Consumption on PON1 and VOand Apelin, Bloo…
- In a 12-week placebo-controlled trial of 55 overweight young adults, a multi-ingredient supplement containing 500 mg green tea extract lowered body weight and fat mass more than placebo, though the green tea effect cannot be separated from the other ingredients.Novel Multi-Ingredient Supplement Facilitates Weight Loss and Improves Body Composition in Overweight and Obese Individu…
- In 52 men and women aged 18-45, drinking three servings a day of a green and roasted coffee blend (121 mg caffeine) for 8 weeks lowered body fat percentage, blood pressure, blood sugar, triglycerides and leptin compared with a control drink.Regularly consuming a green/roasted coffee blend reduces the risk of metabolic syndrome.
- In 52 healthy exercise-trained adults (half women), four weeks of protein plus a thermogenic supplement kept resting energy burn higher than no supplement, but body composition, body measurements and mood did not differ.Chronic Thermogenic Dietary Supplement Consumption: Effects on Body Composition, Anthropometrics, and Metabolism.
- In 50 adults (58% women), a single 1 mg/kg caffeine dose lowered breakfast calorie intake by about 10%, but 3 mg/kg did not, and appetite and food intake later in the day were unchanged.Caffeine Transiently Affects Food Intake at Breakfast.
- In 48 adolescents with obesity, green tea (3 cups daily) for 6 months did not clearly change BMI compared with herbal tea placebo, while coffee produced the largest BMI drop.Effect of Coffee and Tea Consumption on Adolescent Weight Control: An Interventional Pilot Study.
- In 46 women on a low-calorie diet for 12 weeks, green tea extract did not improve blood markers compared with placebo, and early blood gains were reversed by the end even as weight kept falling.Metabolic effects of green tea and of phases of weight loss.
- In 45 overweight middle-aged men over 8 weeks, 500 mg daily of green tea extract combined with endurance training lowered weight, body fat and inflammation more than training with placebo.Effects of green tea extract supplementation and endurance training on irisin, pro-inflammatory cytokines, and adiponect…
- In 38 postmenopausal women walking three times a week, 150 mg EGCG twice daily for 12 weeks cut waist size and body fat about as much as placebo, though it lowered resting heart rate and blood glucose in women with impaired glucose tolerance.Can EGCG reduce abdominal fat in obese subjects?
- In a 12-week placebo-controlled trial of adults with overweight, 282 mg EGCG plus 80 mg resveratrol daily did not change overall gut bacteria, and fat burning measured by indirect calorimetry was not linked to gut bacteria changes.Examination of sex-specific interactions between gut microbiota and host metabolism after 12-week combined polyphenol su…
- In 35 obese adults with metabolic syndrome, 8 weeks of green tea drink or extract did not change metabolic syndrome features, though it lowered one inflammation marker, serum amyloid alpha, compared with no treatment.Green tea minimally affects biomarkers of inflammation in obese subjects with metabolic syndrome.
- In 30 overweight women doing 8 weeks of endurance training, 500 mg daily green tea extract produced greater drops in weight, BMI, waist-to-hip ratio and body fat than training with placebo, along with a larger fall in the inflammation marker hs-CRP.Does green tea extract enhance the anti-inflammatory effects of exercise on fat loss?
- In an 8-week placebo-controlled trial of 30 obese adults, 150 mg of green tea EGCG twice daily lowered blood pressure, though the abstract does not report a weight change.Epigallocatechin gallate enhances sympathetic heart rate variability and decreases blood pressure in obese subjects: a r…
- In 30 obese men, 8 weeks of sprint interval training with caffeine taken before sessions produced greater reductions in body fat and better strength, fitness, blood sugar and cholesterol than training with placebo. The study enrolled men only.Eight Weeks of Sprint Interval Training With Adding Caffeine Ingestion Leads to Greater Improvements in Health-Related P…
- In a 60-day placebo-controlled trial of 28 overweight postmenopausal women, green tea extract increased fat burning and resting energy use, and reduced waist size, insulin and CRP compared with placebo.A 60-Day Green Tea Extract Supplementation Counteracts the Dysfunction of Adipose Tissue in Overweight Post-Menopausal a…
- In 27 overweight women, a daily caffeine and green tea catechin drink combined with a 10-week exercise program improved muscle mass, peak oxygen use and strength compared with placebo and exercise alone.Physiological effects of caffeine, epigallocatechin-3-gallate, and exercise in overweight and obese women.
- In 27 overweight adults exercising regularly for 8 weeks, 400 mg daily of decaffeinated green tea extract with added quercetin and alpha-lipoic acid improved fat burning during exercise and lowered bad cholesterol, while body composition was largely unchanged.The Impact of Decaffeinated Green Tea Extract on Fat Oxidation, Body Composition and Cardio-Metabolic Health in Overweig…
- In 24 women with obesity doing 8 weeks of high-intensity interval training, caffeine at 3 mg per kg before each session reduced body fat along with training alone, but only the caffeine group avoided the rise in blood sugar and insulin seen with training alone.Caffeine Optimizes HIIT Benefits on Obesity-associated Metabolic Adversity in Women.
- In 24 obese adults over 8 weeks, a combination of ephedrine, caffeine (150 mg) and a med produced more weight loss than placebo (2.2 kg vs 0.7 kg) without restricting food intake.Read the study on PubMed (8384187) →
- In 20 women walking on a treadmill, a 6 mg per kg caffeine dose slightly raised energy use compared with placebo, but the authors judged the increase too small to affect weight loss.The physiological effects of caffeine in women during treadmill walking.
- In 20 women of average fitness, a single caffeine dose of 3 or 6 mg per kg did not change energy cost, heart rate, or perceived effort during aerobic-dance bench stepping compared with placebo.The effects of caffeine in women during aerobic-dance bench stepping.
- In 19 active men, 28 days of decaffeinated green tea extract did not change fat burning during moderate exercise on day 1, day 7 or day 28 compared with placebo.Variable duration of decaffeinated green tea extract ingestion on exercise metabolism.
- In 18 adults in a single test session, green tea capsules raised calorie burn after a meal compared with placebo, but adding milk protein to the meal cancelled this effect.Consumption of milk-protein combined with green tea modulates diet-induced thermogenesis.
- In 13 women, drinking matcha green tea (1 g per drink) before a 30-minute brisk walk increased the fat burned during exercise compared with control.Matcha Green Tea Drinks Enhance Fat Oxidation During Brisk Walking in Females.
- In 13 healthy adults, a single dose of caffeine (3 mg per kg of body weight) taken before cycling raised the peak rate of fat burning during exercise compared with placebo, without changing total energy use.Effects of p-Synephrine and Caffeine Ingestion on Substrate Oxidation during Exercise.
- In a crossover trial of 12 healthy men, one day of green tea extract capsules (366 mg EGCG total) raised fat burning during moderate exercise by about 17% compared with placebo.Green tea extract ingestion, fat oxidation, and glucose tolerance in healthy humans.
- In 12 women taking 3 grams of Matcha green tea powder daily for 3 weeks, fat burning during a 30-minute moderate walk rose compared with placebo, while energy expenditure stayed the same.Three Weeks Daily Intake of Matcha Green Tea Powder Affects Substrate Oxidation during Moderate-Intensity Exercise in Fe…
- In 12 men over three days, drinking water with 270 mg caffeine raised 24-hour energy expenditure by about 3.4 percent compared with plain water, and full-strength oolong tea also raised fat burning by 12 percent.Oolong tea increases metabolic rate and fat oxidation in men.
- In 12 healthy adults cycling for 1 hour, a 3 mg per kg caffeine dose increased the amount of fat burned compared with placebo, though total energy use did not change.Caffeine increases whole-body fat oxidation during 1 h of cycling at Fatmax.
- In 10 overweight men, 300 mg of epigallocatechin-3-gallate taken for 3 days increased fat burning after a meal to a similar extent as 200 mg caffeine, while 600 mg did not, and energy expenditure was unchanged.Epigallocatechin-3-gallate and postprandial fat oxidation in overweight/obese male volunteers: a pilot study.
- In 8 healthy young men during a 3-hour mild cold exposure, a green tea extract with 1600 mg EGCG and 600 mg caffeine reduced shivering and raised energy expenditure compared with placebo.Effects of green tea extracts on non-shivering thermogenesis during mild cold exposure in young men.
- In 8 healthy young men, 8 weeks of 500 mg daily green tea extract increased fat burning after exercise compared with placebo, though it did not improve muscle glycogen refilling.Effect of green tea extract supplementation on glycogen replenishment in exercised human skeletal muscle.
- In a 2-day crossover study of 6 overweight men, 300 mg per day of green tea EGCG lowered the breathing ratio after a meal, a sign of more fat burning, but resting energy use did not change.The effects of epigallocatechin-3-gallate on thermogenesis and fat oxidation in obese men: a pilot study.
- Short-term green tea and cocoa flavanol drinks did not lower fasting trimethylamine N-oxide levels in obese adults.Impact of short-term flavanol supplementation on fasting plasma trimethylamine N-oxide concentrations in obese adults.
- In obese adults, EGCG supplements for 4 to 8 weeks lowered triglycerides and blood pressure but did not reduce body weight, BMI, waist or hip size, or body fat.Epigallocatechin gallate decreases plasma triglyceride, blood pressure, and serum kisspeptin in obese human subjects.
- In rats given caffeine with albuterol for 4 to 8 weeks, body fat gain was reduced and lean mass gain increased without changes in food intake; in humans, single doses raised resting metabolic rate, but this was not tested for weight loss in women.The effect of caffeine and albuterol on body composition and metabolic rate.
- In 60 adults with borderline high blood glucose, a daily green tea extract powder providing 456 mg of catechins for 2 months lowered hemoglobin A1c but did not change weight or body mass index.Randomized controlled trial for an effect of green tea-extract powder supplementation on glucose abnormalities.
- In 45 elderly adults with metabolic syndrome, drinking three cups of green tea daily for 60 days produced weight loss, lower body mass index and smaller waist size, while the no-intervention group did not lose weight.Effect of green tea (Camellia sinensis) consumption on the components of metabolic syndrome in elderly.
- In 16 healthy adults, 200 mg caffeine combined with ephedrine raised blood pressure, heart rate, fasting glucose, and insulin more than either drug alone or placebo.Enhanced stimulant and metabolic effects of combined ephedrine and caffeine.
- In a small uncontrolled pilot of 8 obese adults with metabolic syndrome, eating green tea extract bread daily for three months did not change body weight, BMI, waist, or body fat, though fat absorption measured by a breath test fell.Green tea influences intestinal assimilation of lipids in humans: a pilot study.
- Prenatal caffeine exposure, including at the recommended safe level, was linked to more externalizing behavior problems in children aged 9 to 11.Prenatal caffeine exposure: association with neurodevelopmental outcomes in 9- to 11-year-old children.
- Higher caffeine levels during pregnancy were linked to shorter height in children aged 4 to 8, even at low caffeine intake.Association of Maternal Caffeine Consumption During Pregnancy With Child Growth.
- In a study of 106 young children of obese mothers, days when children had caffeine were linked to 121 more calories and 3.8 grams less protein, so caffeine tracked with poorer diet quality rather than weight control.Calories, Caffeine and the Onset of Obesity in Young Children.
- In 24 adults with obesity, caffeine was used as a test drug to measure enzyme activity, and weight loss of 3 to 6 months changed some drug-metabolizing enzyme activity; caffeine itself was not tested for weight loss.Examining the Impact of Diet-and-Exercise-Induced Weight Loss on Drug Metabolism and Gastric Emptying in Patients with O…
Review Totals and Summary
Members OnlyWhat buyers say
I could not retrieve genuine customer review text for this specific CVS Health product, so I can't honestly report what buyers say about it. The pages I could access were product listings on delivery platforms and nutrition databases. None showed written feedback, and the CVS review pages that surfaced belonged to other brands, such as Applied Nutrition and Nature's Bounty. I won't make up customer opinions. What the sources do show is only product-level information. Retailers consistently position it as a low-cost, store-brand option, with Hello Hippo listing an average retail price of about $6.80 for 30 capsules. Listings emphasize that it is free of gluten, lactose, sugar, preservatives and artificial colors. They also stress that it contains caffeine, with a prominent warning about its strength. Because of that, the themes I would expect shoppers to raise are stimulant effects such as jitteriness, plus whether the weight-loss claims are noticeable. That is an expectation based on the caffeine warning, not something I found in reviews. To see real opinions, check the product page on CVS.com or Amazon directly, or ask me to look at a similar branded green tea extract that has indexed reviews.
Biohacker Summary
Members Only8 of 10 recommend it
Green tea gets a mixed but mostly friendly reception: four of the ten panelists say they use it, and a few recommend it, while the rest are neutral and one warns. People drink it for focus and calm energy, for fat loss and calorie burning, and as a swap for coffee, with one panelist rotating two days of green tea with two days of coffee. The panel talks about green tea as a drink and about its extract compound EGCG, and nobody gives a dose for it. Suggested pairings are lemon for better absorption and MCT oil in a matcha drink. One panelist warns that very high doses of green tea extract could harm the liver, and another says green tea extract did not extend lifespan in animal studies. Caffeine is a smaller ingredient in this product, and the panel's main advice is to stop it by midday or earlier so it does not hurt sleep.
See all 10 biohackers →Hide the biohackers
Siim Land · Green Tea · recommends
- States that green tea is very effective for visceral fat loss due to its polyphenol content.
- Personally drinks 2 cups of green tea a day and made it one of the small changes while reducing his visceral fat.
- Recommends stopping caffeine earlier to improve sleep.
- Mentions that green tea's EGCG has stimulated autophagy in cultured liver cells and mouse experiments by increasing AMPK.
- Notes that polyphenolic compounds in coffee, both decaf and regular caffeinated, can influence cellular stress pathways and have been seen to increase autophagy activity in mice, with regular coffee appearing more potent due to caffeine's additional energetic stress.
- Recommends moving caffeine intake earlier in the day because having it too late can disrupt sleep, especially for slow metabolizers.
- Recommends not having caffeine after lunch, noting that 400 mg 4 hours before bed reduced deep sleep by approximately 30 minutes in a trial, although he personally has a fast caffeine metabolism.
- Consumed more polyphenol-rich foods, including green tea, to reduce visceral fat.
- Mentions that he drank green tea, which targets visceral fat, as one of the things he did to reduce visceral fat.
- Warns that combining a large dose of glycine with caffeine can amplify negative experiences, as caffeine independently increases arousal and can cause restlessness, anxiety, and increased heart rate.
- Drinks 1-3 cups of green tea a day, noting that there are multiple lines of evidence suggesting it improves various health markers and may have longevity benefits.
- States that green tea is one of the healthiest beverages in the world, improving cardiovascular disease risk factors, heart health, metabolic health markers, targeting all hallmarks of aging, reducing visceral fat, and being associated with lower mortality.
- When dropping his visceral fat, Siim Land drank around one to three cups of green tea per day, usually in the morning and before exercise, and believes it contributed to visceral fat loss.
- States that regular coffee promotes visceral fat loss, and going from low or zero intake to moderate intake increases fat loss due to caffeine and polyphenols.
Thomas DeLauer · Green Tea · uses
- Now rotates green tea with coffee, having green tea for two days, then coffee for two days, to maintain energy and benefit from different antioxidant profiles. He previously focused too much on green tea and neglected coffee.
- Combines MCT oil with matcha green tea in a cognitive cocktail, finding that green tea provides more mental benefits than coffee for focus and calm energy.
- Explains that caffeine from green tea mobilizes fatty acids, which can be converted into ketones, providing a ketone boost, especially in a fasted or low-carb state.
- Warns that treating brain fog with caffeine without addressing underlying inflammation is ineffective and likely to make the situation worse.
- Notes that caffeine significantly increased fat metabolism and fat oxidation during exercise, especially at lower intensities, and that adding coffee around an exercise bout led to more calories and fat burned.
- Says that caffeine significantly increased fat metabolism and that at low intensity cardio or exercise caffeine works better at mobilizing and utilizing fat.
- Explains that green tea's catechin benefits often diminish in the intestines, with less than 20% surviving digestion, but adding citrus can reclaim these benefits by about 5x.
- Recommends adding citrus, specifically lemon, to green tea to reclaim the benefits of catechins, as it can leave 80% of them intact.
- Might have some caffeine before fasted training.
- Recommends caffeine as a must on the fasting day to create a low-grade energy demand that forces the body to favor lipolysis.
- Recommends sipping green tea while walking fasted in the morning to help extend the fat oxidation window.
- Recommends drinking 150 to 200 mg of caffeine immediately before a 20-minute nap to enhance alertness and performance, as the caffeine peaks when the nap has cleared adenosine.
- States that caffeine is probably the most studied ergogenic aid with a profound effect on fat mobilization, suggesting that simple is better.
- Recommends one to three small cups of green tea, ideally in the morning, as consistent consumption over two to three weeks increases BDNF due to EGCG.
Dr. Eric Berg · Green Tea · neutral
- Suggests pairing green tea with lemon for better absorption.
- Warns that caffeine can keep you awake and advises to watch out for hidden sources of caffeine.
- Suggests incorporating anti-cancer foods like green tea to help prevent pancreatic cancer.
- Stimulating the body with caffeine can actually make fatigue worse.
- Recommends replacing coffee with green tea.
- Dr. Berg warns that stimulating the body with caffeine can actually make fatigue worse.
- Mentions green tea as an ingredient that can bring something different to the table for liver health.
- Warns that too much caffeine is a common cause of worry, indecision, fear, and tension, and that it depletes vitamin B1, negatively affecting the nervous system.
- Recommends replacing coffee with green tea as a step towards improving energy levels and brain functioning.
- Recommends drinking green tea for EGCG, which benefits many things, from weight loss to cancer prevention.
- Dr. Eric Berg recommends green tea as a home remedy to help prevent hair loss and regrow hair.
- Warns that even a lot of caffeine in the morning can inhibit melatonin at night.
- Warns that coffee does not give you energy; instead, caffeine binds to adenosine receptors, inhibiting sleep signals and merely preventing sleepiness.
- L-theanine is an amino acid that occurs naturally in green and black tea leaves. Dr. Eric Berg encourages viewers to find out more about the benefits of L-theanine and green tea.
Dr. Mark Hyman · Green Tea · neutral
- Mentions that EGCG from green tea activates thermogenesis, contributing to calorie burning.
- Discusses with patients their caffeine consumption, suggesting that too much caffeine can artificially increase their stress response.
- Recommends stopping caffeine by noon.
- States that caffeine's effect on ADHD depends on the person, as it can help focus but also activate irritation or stress, and its impact is related to individual caffeine metabolism.
- States he was using green tea to stimulate the NRF2 pathway and open up detox.
- Warns that drinking coffee first thing in the morning before eating layers caffeine on top of already elevated stress hormones, providing unsustainable energy and setting up for an afternoon crash.
- Notes that caffeine is one of the things that drives the hormone imbalance causing PMS.
- States that drinking coffee on an empty stomach, which is how most people do it, is probably not the best thing as it gives a jolt of caffeine and adrenaline before eating.
- Warns that caffeine, alcohol, and spicy foods can be potent triggers for hot flashes, and excess caffeine should be avoided.
- Warns that adding fiber does not cancel out the negative effects of caffeine and other processed additives.
- Warns that high caffeine intake, especially coffee, can contribute to dehydration by increasing fluid loss and masking fatigue, leading to a deficit if not balanced with sufficient water intake.
- Warns that caffeine without adequate protein creates blood sugar chaos, sending a stress signal to the brain and hindering healing.
- Mentions that green tea has super beneficial effects on Akkermansia muciniphila, a keystone species that protects the gut lining, prevents leaky gut, reduces inflammation, and helps metabolic health.
- Lists green tea extract as a phytochemical that helps mitochondrial function.
Andrew Huberman · Green Tea · uses
- Drinks green tea and believes it has very positive cognitive benefits in terms of focus.
- Used caffeine, taking 400 milligrams, to improve his mood and physical vigor during mundane tasks like swimming, noting that it made life not so bad and allowed him to rip through the water.
- Mentions caffeine in a discussion about supplement use.
- Discusses caffeine timing as a tool related to sleep.
- He recommends caffeine, in coffee or tea form, or in tablet or capsule form at lower dosages than found in coffee and tea, as a reasonable way to explore stimulant-based approaches for enhancing cognitive function and focus.
- Huberman states that caffeine can improve focus and concentration, with a general useful range of 100 to 400 milligrams, and most people do well with 100 to 200 milligrams prior to focused work.
- Discusses caffeine as a tool for improving attention, noting its impact on focus and sleep.
- Mentions that coffee and tea produce caffeine, which were likely defense chemicals, and that plants learned it was better to alter consciousness than kill predators outright.
- Discusses caffeine and its health benefits.
- Recommends caffeine as a tool to increase motivation and dopamine.
- Huberman explains that regular ingestion of caffeine at safe levels of about 100 to 250 mg increases the number of D2 and D3 dopamine receptors, making circulating dopamine more potent.
- Uses Athletic Greens AG1 in the morning for gut health.
- Takes a couple of green tea capsules in the morning.
- Includes green tea in his diet because its EGCG compound has been shown to stimulate GLP-1.
Dave Asprey · Green Tea · warns
- Warns that very high doses of EGCG or green tea extract could cause harm to the liver.
- Loves coffee, has the caffeine molecule tattooed on his arm, drinks it every morning, and says it does amazing things for your brain and for how long you can live, but it can't clear most brain fog on its own.
- Created Danger Coffee, a mineral-enriched, lab-tested, mold-free coffee that delivers rich flavor and clean caffeine without all the junk, and recommends it to others.
- Dave Asprey's lab proved that caffeine is a flow hack and the only known substance to actually make you flow prone. Coffee will make you more flow prone.
- Dave explains why the 1:2 ratio of caffeine to L-theanine beats coffee alone for working memory, accuracy, and calm, sustained concentration.
- States that his entire career started on caffeine and he uses it every morning, but notes it's like a loan from your future self, leading to an afternoon crash.
- Dave Asprey's company used caffeine, which is a safe ingredient, but they stopped using it because it doesn't provide the type of results and change in the skin that newer ingredients do.
- States that caffeine is one of his superpowers and increases the rate of ketone formation, which fuels neurons.
- Once I’ve hydrated and taken my creatine, I reach for Danger Coffee for caffeine and essential minerals in one cup.
- Uses caffeine, noting it blocks adenosine to increase norepinephrine and dopamine signaling, fueling the prefrontal cortex for focus. He mentions it got him through business school and is part of his longevity journey.
- Does not believe caffeine is a nootropic, considering it just a stimulant.
- Mentions green tea as a source of EGCG but notes it also contains oxalates.
- Warns that green tea depletes folic acid and may not be advisable during pregnancy, or at least should be taken with folic acid.
- Mentions that green tea contains oxalate, though it is lower than black tea and matcha.
Ben Greenfield · Green Tea · uses
- Drinks green tea in the morning as part of her quiet time.
- Came off caffeine for a year after his separation.
- Quit caffeine in the same year he quit testosterone replacement therapy and alcohol.
- Uses caffeine, such as coffee or green tea, in his morning fasted fat-burning session to slightly increase the oxidation of fats.
- Advises against relying on caffeine for morning energy, suggesting that natural sugar-based stimulants combined with hydration and meditation can provide sufficient wakefulness.
- Recommends Caffeine, noting that it can improve focus, mood, and training, help control appetite, raise calories burned, and reduce fatigue.
- Notes that 3 mg/kg of caffeine increases fat oxidation by 31%, and 5 mg/kg increases it by 51% compared to a placebo.
- Caffeine on its own isn’t particularly impressive as an ergogenic aid, but when combined with taurine, there are significant increases in power production.
- Mentions that caffeine can help mitigate the negative effects of a caloric deficit on lean muscle mass and metabolism.
- Has talked before about caffeine as a supplement that seems to assist with sleep deprivation.
- Warns that energy drinks can deliver large doses of caffeine quickly, which may overstimulate the heart and cause abnormal heart rhythms and electrocardiogram changes, especially in children.
- States that Nuchido Time Plus includes green tea extract for its high level of EGCG, which inhibits the methylating enzyme NNMT, ensuring nicotinamide is recycled rather than excreted.
- Suggests that one could do a carnivore diet and still have a cup of green tea in the morning to introduce hormetic stressors.
- Recommends green tea as part of a morning fat loss strategy to increase fatty acid oxidation when consumed in a fasted state.
Bryan Johnson · Green Tea · uses
- Takes Athletic Greens AG1 in the morning for gut health.
- Drinks coffee when starting to fade, ensuring the last cup is between 10 and 12 hours before bed so caffeine doesn't affect sleep.
- Used 300 mg of caffeine in the morning as part of their jet lag recovery.
- Uses 300 mg of slow release caffeine in the morning as part of a jet lag recovery protocol.
- Notes that coffee affects the gut, which then affects the brain, and that it is the coffee bean, not the caffeine, doing most of the work.
- Notes that the culture in DC involves running on caffeine, along with alcohol and sleep deprivation, leading to poor nutrition and an unhealthy environment.
- Warns that caffeine has a 6-hour half-life, so consuming it later in the day will leave a significant amount in the body at bedtime, recommending consumption earlier in the day.
- Recommends consuming no caffeine past noon due to its 6-hour half-life, suggesting that if sleep is nailed, caffeine might not be needed.
- Warns against stimulants like caffeine for sleep, advising to have the last cup of coffee before noon if going to bed at 10:00 p.m.
- Advises that if one is going to drink caffeine, they should try to have it earlier in the day and experiment to find the right time that doesn't disrupt their sleep.
- Has stopped all caffeine, as it has helped him improve his sleep.
Peter Attia · Green Tea · neutral
- Explains that green tea extract was tested due to popular reputation and traditional medicine claims, but it did not extend the lifespan of animals in their studies.
- States that he needs two to three times the normal dose of any medication or drug to feel an effect, including caffeine, and can drink four cups of coffee without feeling anything.
- Mentions data suggesting caffeine might be more helpful in the luteal phase to help with fatigue components.
- Uses caffeine in combination with Alpha GPC, MCT, and Theanine, often adding it to coffee for long periods of cognitive work.
- Finds Alpha GPC works well with caffeine, and he puts a product containing Alpha GPC, MCT, and caffeine into his coffee for long periods of cognitive work.
- Mentions that experimenting with the timing of caffeine is a great idea for sleep.
- Warns that decaffeinated coffee can contain significant amounts of caffeine and advises cutting off all coffee, including decaf, by 11 a.m. for better sleep quality.
- Explains that caffeine is problematic because it blocks adenosine receptors, leading to a 'caffeine crash' when it wears off and adenosine floods the receptors, causing sleepiness.
- States that caffeine does not wake him up, which contributed to his belief that he did not have an addiction gene.
- States that caffeine does not wake him up.
- Warns that constantly consuming caffeine and Red Bull to turn up the sympathetic dial is a sign that the sympathetic system isn't working as it should, possibly due to overstimulation from stress.
Dr. Rhonda Patrick · Green Tea · neutral
- Dr. Patrick mentions that catechins and polyphenols are found in things like green tea, dark chocolate, turmeric, blueberries, and other purple pigmented fruits and vegetables, as well as red wine.
- Explains that caffeine can activate AMPK, a cellular energy sensor involved in fat burning and glucose regulation, which helps muscle cells take up glucose and promotes using fatty acids for energy.
- Recommends pairing caffeine with L-theanine to enhance alertness and focus while mitigating anxiety and jitteriness, suggesting a dose of 100 to 150 mg of caffeine.
- Recommends pairing coffee with L-theanine to enhance cognitive performance, noting that L-theanine can help balance caffeine’s stimulatory effects.
- Recommends cutting out caffeine in the three months before conception for both men and women, as it affects sperm.
- Recommends caffeine for alertness and focus, especially when combined with L-theanine to smooth out the response and maintain cognitive benefits, suggesting a practical dose of 100-150 mg.
- Recommends cutting down or eliminating caffeine when actively trying to conceive.
- Warns that a very high dose of caffeine, around 350 mg pre-workout, may blunt some of creatine's performance benefit due to opposite effects on muscle relaxation.
- Self-administers 350 mg of caffeine in a bolus right after returning from mass and his workout, and before eating, noting that he likes dark roast Starbucks.
- The newest literature on Caffeine dose and its link to multiple cardiometabolic disease risk reduction shows that even the ≥400 mg group was healthier than 0 mg.
- Explains that caffeine works by blocking adenosine, a molecule that builds up and makes one feel tired, and that timing coffee intake is about leveraging adenosine biology for peak cognitive alertness.
- Notes that catechins in green tea have antioxidant, anti-inflammatory, and anticarcinogenic properties, and their bioavailability can be increased by adding vitamin C.
- Notes that a "green" calorie-restricted Mediterranean diet was enriched with polyphenols from green tea and mankai, and greater intake of polyphenol-rich foods like mankai and green tea further enhanced benefits for brain health.
- Mentions plant polyphenols found in green tea as beneficial hormetic stressors that activate the body's stress response mechanisms.
RAL Summary
Members OnlyTier 4 for Weight and Metabolism for Women
Human studies, including large reviews, show a small weight loss from green tea extract, but trials in women are mixed and no customer reviews could be counted, so it stays emerging.
- Emerging: not enough evidence to rank higher yet.
Where the evidence disagrees: 27 of the 80 human studies found no effect.
More Details
Members OnlyBody systems · Combine with · Possible side effects
Body systems: Metabolic system, Nervous system, Cardiovascular system
Combine with: For the metabolic and antioxidant purposes this product is suited to, consider pairing it with other supplements that support a healthy weight, such as chromium, berberine, or alpha-lipoic acid for glucose handling, and with omega-3s or CoQ10 for general antioxidant and cardiometabolic support. Take it with food to lower the risk of stomach upset, and avoid taking it with iron, since the catechins reduce iron absorption. If your real goal is post-meal upper-abdominal comfort, look instead at digestive enzymes (protease, lipase, amylase), ginger root, peppermint oil, or artichoke leaf extract. Talk with a healthcare provider if symptoms are persistent, and especially if you have liver issues.
Possible side effects: Caffeine can cause jitteriness and trouble sleeping, and a caffeine and ephedra trial reported more dry mouth, heartburn and insomnia. No reviews were read to add user reports.
Supplement Facts
Green Tea extract 250 mg · Caffeine 50 mg
| Calories | 5 | |
| Green Tea (Camellia sinensis) (leaf) extract | 250 mg | † |
| Caffeine | 50 mg | † |
Other ingredients: Sunflower Oil, Green Tea extract, Gelatin, Glycerin, Caffeine, Monoglycerides, purified Water, Lecithin, yellow Beeswax, Caramel powder, Titanium Dioxide.
Directions: Directions: Adults - One softgel three times daily with food as a dietary supplement.
Barcode (UPC) 050428424131 · Label source: NIH label database · Report a label change
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Graded November 4, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.
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