Thorne Green Tea Phytosome Review
Green Tea Phytosome is presented as an optimally absorbed form of green tea that supports fat burning and provides liver protection. The product description explains that Green Tea Phytosome, made of green tea polyphenols bound to phospholipids, functions as a liver protective antioxidant and provides fat burning benefits without caffeine. Green tea is described as popular for its antioxidant properties and its thermogenic, or fat burning, effect. Thorne's Green Tea Phytosome is said to contain polyphenols and to help maintain the body's level of glutathione, another important antioxidant. The page states that green tea extracts can increase natural energy expenditure and fat oxidation, thus essentially burning calories. The polyphenols are also said to offer liver-protective benefits and help maintain the body's normal inflammatory response to oxidative stressors. According to the page, the product is optimally absorbed; one study showed the peak blood concentration of the polyphenol EGCG from the Green Tea Phytosome complex, measured over six hours, was almost twice that of a non-complexed green tea extract. The page describes Greenselect Phytosome, the ingredient used, as tested in obese subjects of both genders on a low-caloric diet. In that study of 100 subjects, 50 received the green tea extract plus the low-calorie diet and 50 followed only the diet. After 90 days, significantly greater improvements in weight and body mass index were reported in the Greenselect Phytosome group compared to the diet-only group. The page also cites human studies of green tea's weight management properties that revealed greater calorie burning by individuals who took the extract compared to those who did not. It notes that although some effects of green tea extract are attributed to caffeine, one study found increased metabolic rate and greater fat metabolism in subjects taking a green tea extract without caffeine compared to placebo. The Why Thorne section says Greenselect Phytosome is formulated with the scientific rigor Thorne is known for, with each ingredient carefully selected, clinically studied, and tested through multiple rounds of quality control for purity, potency, and consistency. Thorne states it is trusted by health-care practitioners. The Tested for quality section says the product has been third-party tested and certified to verify that what is in the package matches the label and confirms it contains no unsafe levels of contaminants such as heavy metals, pesticides, and microorganisms. The product comes as 60 capsules, with a serving size of one capsule containing 250mg of Green Tea Phytosome, priced at $34. Warnings state that the product is contraindicated in individuals with a history of hypersensitivity to any ingredients, that pregnant people should consult a health-care practitioner before use, that there are no known adverse interactions at publication date, and that New York law prohibits sale to individuals under eighteen.
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Study, Trial or Testing Result Summary
Members Only53 human studies · 32 improved
Green tea is the only active ingredient here, at 750 mg a day, which is above the 400 mg dose that worked in studies. Across 53 human studies, 32 found an improvement and 15 found no effect. A pooled analysis of 111 trials with 6171 adults with overweight or obesity found about 1.25 kg more weight loss than comparison groups, though the certainty was low [1]. A pooled analysis of 59 trials with 3802 people found lower body weight, body mass index and body fat percentage, but no change in fat mass [2]. Another pooled analysis found about 1.78 kg more weight loss, with the largest effect at doses under 500 mg a day over 12 weeks [3]. In 240 Japanese men and women with belly fat, 583 mg of catechins daily for 12 weeks reduced weight, body fat and waist size more than a low dose [4]. In 182 overweight Chinese adults, 886 mg of catechins daily for 90 days cut waist size by 1.9 cm and weight by 1.2 kg [5]. Green tea did not help people keep weight off after dieting [6]. Overall, the effect is small but fairly consistent. Animal and cell studies are never counted.
See all 53 studies →Hide the studies
- In a pooled analysis of 111 trials with 6171 adults with overweight or obesity, green tea supplements led to about 1.25 kg more weight loss than comparison groups, though the certainty of this 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 reduced 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 who had lost weight, including three on green tea, no significant effect of green tea on keeping weight off was found.Dietary Strategies for Weight Loss Maintenance.
- In four trials with 169 women with polycystic ovary syndrome, green tea led to about 2.8 kg lower body weight than placebo, though the evidence was rated very low quality.Green tea promotes weight loss in women with polycystic ovary syndrome: Systematic review and meta-analysis.
- A pooled analysis of randomized trials found green tea lowered body weight by about 1.78 kg and BMI by 0.65 compared with controls, with the largest weight loss at doses under 500 mg per day over 12 weeks.The effect of green tea supplementation on obesity: A systematic review and dose-response meta-analysis of randomized co…
- In a comparison of 36 diet trials in people with overweight or obesity, catechin-rich green tea with inulin ranked among the better weight loss treatments in one of the networks.Diet Therapeutics Interventions for Obesity: A Systematic Review and Network Meta-Analysis.
- In 10 randomized trials of overweight or obese people who exercised, adding green tea gave a small extra reduction in weight, BMI and body fat but 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 15 human studies found that daily green tea giving 100 to 460 mg of EGCG reduced body fat and body weight best when taken for 12 weeks or more.[Effects of green tea and its epigallocatechin (EGCG) content on body weight and fat mass in humans: a systematic review…
- In a review of 32 studies of plant extracts, including green tea, no extract showed a consistent effect on reducing hunger or increasing fullness in adults with overweight or obesity.Appetite-Suppressing and Satiety-Increasing Bioactive Phytochemicals: A Systematic Review.
- Over 18 months, adults with belly fat who followed a green-Mediterranean diet with 3-4 cups of green tea daily lost about twice as much liver fat as those on a healthy diet, though the green tea was part of a whole diet rather than tested alone.Effect of green-Mediterranean diet on intrahepatic fat: the DIRECT PLUS randomised controlled trial.
- In 294 adults with abdominal obesity over 18 months, adding green tea to a Mediterranean diet produced a larger rise in fasting ghrelin than other diets, and in men this rise tracked with better insulin sensitivity and less visceral fat, though weight loss was similar across diets.Diet-induced Fasting Ghrelin Elevation Reflects the Recovery of Insulin Sensitivity and Visceral Adiposity Regression.
- In adults with belly fat, a green-Mediterranean diet that included daily green tea and Mankai plant led to gradual improvements in body weight and heart-related health markers, with changes in gut bacteria partly explaining these benefits.The effects of the Green-Mediterranean diet on cardiometabolic health are linked to gut microbiome modifications: a rand…
- Over 18 months, adults on a green-Mediterranean diet that included 3-4 cups of green tea daily lost about twice as much visceral belly fat as those on a healthy diet, and greater green tea intake was linked to greater fat loss.The effect of high-polyphenol Mediterranean diet on visceral adiposity: the DIRECT PLUS randomized controlled trial.
- In a mostly male group with excess weight followed for 18 months, eating green tea 3-4 cups daily as part of a green Mediterranean diet was linked to slower brain aging, beyond the weight lost, but the study did not report a direct effect of green tea on weight.Glycemic control contributes to the neuroprotective effects of Mediterranean and green-Mediterranean diets on brain age:…
- In 240 Japanese men and women with visceral fat obesity, 583 mg of catechins daily for 12 weeks reduced body weight, body fat, waist size and LDL cholesterol more than 96 mg of catechins.A green tea extract high in catechins reduces body fat and cardiovascular risks in humans.
- In 182 moderately overweight Chinese adults, the highest dose of 886 mg catechins daily for 90 days cut waist size by 1.9 cm, body weight by 1.2 kg and abdominal fat compared with the control drink.Effects of catechin enriched green tea on body composition.
- In 132 overweight and obese adults who exercised, about 625 mg of catechins daily for 12 weeks reduced abdominal fat and triglycerides more than control, but body weight and total fat mass changes did not differ significantly.Green tea catechin consumption enhances exercise-induced abdominal fat loss in overweight and obese adults.
- In 104 overweight adults regaining weight after a diet, green tea over 13 weeks did not reduce weight regain compared with placebo.Effects of green tea on weight maintenance after body-weight loss.
- In a double-blind placebo-controlled trial of 102 women with central obesity, 856.8 mg daily of green tea extract for 12 weeks produced a small but significant weight loss of about 1.1 kg and a smaller waist, with no side effects reported.Therapeutic effect of high-dose green tea extract on weight reduction: A randomized, double-blind, placebo-controlled cl…
- In 91 overweight adults taking a multi-plant blend containing green tea extract with a reduced-calorie diet for 12 weeks, average weight loss was 2.26 kg versus 0.56 kg with placebo, along with greater fat loss; the green tea amount was not stated.IQP-GC-101 reduces body weight and body fat mass: a randomized, double-blind, placebo-controlled study.
- In 90 adults after weight loss, capsules of their own gut bacteria reduced weight regain only in the group also eating a green-Mediterranean diet with green tea, not in the other diet groups.Effects of Diet-Modulated Autologous Fecal Microbiota Transplantation on Weight Regain.
- In 78 obese women taking green tea extract for 12 weeks, weight, body mass index and waist size fell no more than with placebo.Effect of green tea extract on obese women: a randomized, double-blind, placebo-controlled clinical trial.
- In young adults with Down syndrome, EGCG supplementation for 12 months prevented the weight gain seen with placebo, with the clearest weight and body fat benefit in males.Effect of epigallocatechin gallate on the body composition and lipid profile of down syndrome individuals: Implications …
- After a diet-induced weight loss, 3 months of a green tea and caffeine mix (270 mg EGCG and 150 mg caffeine daily) helped weight maintenance in people who usually consumed little caffeine, but had no effect in heavy caffeine consumers.Body weight loss and weight maintenance in relation to habitual caffeine intake and green tea supplementation.
- In people with borderline or type 2 diabetes, taking green tea extract containing about 544 mg polyphenols daily for 2 months lowered weight and blood sugar within the group, but the changes did not differ from the control group.Randomized controlled trial for an effect of green tea consumption on insulin resistance and inflammation markers.
- In 62 girls aged 6 to 10 with obesity, 400 mg daily of decaffeinated green tea polyphenols for 12 weeks lowered body fat percentage more than placebo, with no side effects reported.Effect of Decaffeinated Green Tea Polyphenols on Body Fat and Precocious Puberty in Obese Girls: A Randomized Controlled…
- In 60 adults with borderline diabetes, a daily green tea extract powder for 2 months lowered HbA1c but did not change weight or body fat.Randomized controlled trial for an effect of green tea-extract powder supplementation on glucose abnormalities.
- In 60 obese Thai adults on a set diet for 12 weeks, green tea produced greater weight loss than placebo at 8 and 12 weeks, along with higher energy burning at rest.Effectiveness of green tea on weight reduction in obese Thais: A randomized, controlled trial.
- In 60 healthy Japanese adults taking green tea extract with a citrus polyphenol (146 mg EGCG daily) for 12 weeks, weight gain was prevented and body mass index fell 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 adults with excess body weight, 200 mL of green tea kombucha daily for 10 weeks alongside calorie restriction did not produce more weight loss than calorie restriction alone, though it lowered some inflammation markers more.Green Tea Kombucha Impacts Inflammation and Salivary Microbiota in Individuals with Excess Body Weight: A Randomized Con…
- In men and women taking more than 0.56 g daily of green tea extract capsules for 12 weeks, body composition and gut bacteria did not change compared with placebo.Long-Term Green Tea Supplementation Does Not Change the Human Gut Microbiota.
- In 57 overweight young men over six weeks, green tea alone, aerobic exercise alone, or both together lowered body mass index and body fat, with the combination giving better results on heart risk markers.The Effect of Six-Week Aerobic Exercise Combined with ease max Incr2Green Tea Consumption on PON1 and VOand Apelin, Bloo…
- In overweight and obese adults, a supplement containing 500 mg green tea extract plus other ingredients for 12 weeks led to greater weight and fat mass loss 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 a six-month trial of 48 adolescents with obesity, green tea (about 252 mg catechins daily) did not show a clear weight advantage over herbal tea placebo, while coffee produced the largest drop in BMI.Effect of Coffee and Tea Consumption on Adolescent Weight Control: An Interventional Pilot Study.
- In 46 women on a low-calorie diet for about 12 weeks, green tea extract did not change blood health measures compared with placebo, although the study did not test men.Metabolic effects of green tea and of phases of weight loss.
- In 45 elderly adults with metabolic syndrome, three cups of green tea daily for 60 days produced a small weight loss, lower BMI and smaller waist size, while the control group did not change.Effect of green tea (Camellia sinensis) consumption on the components of metabolic syndrome in elderly.
- In 43 adults with type 2 diabetes, a green tea drink with 582.8 mg of catechins daily for 12 weeks reduced waist size more than a drink with 96.3 mg, and raised adiponectin only in the higher-catechin group.A catechin-rich beverage improves obesity and blood glucose control in patients with type 2 diabetes.
- In obese adults with metabolic syndrome, 8 weeks of green tea drinks or extract lowered body weight and BMI more than controls, and the green tea drink also reduced markers of lipid damage.Green tea supplementation affects body weight, lipids, and lipid peroxidation in obese subjects with metabolic syndrome.
- In 35 obese adults with metabolic syndrome, 8 weeks of green tea drinks or extract did not change metabolic syndrome features or most inflammation markers compared with no treatment.Green tea minimally affects biomarkers of inflammation in obese subjects with metabolic syndrome.
- In overweight and obese adults, 6 weeks of catechin-rich green tea with inulin lowered body weight by about 1.3 kg and fat mass by about 0.8 kg, and these effects persisted 2 weeks after stopping.Beneficial effects of catechin-rich green tea and inulin on the body composition of overweight adults.
- In overweight women doing 8 weeks of endurance training, 500 mg daily of green tea extract led to greater loss of weight and body fat than training with placebo, and lowered a marker of inflammation more.Does green tea extract enhance the anti-inflammatory effects of exercise on fat loss?
- In 28 overweight or obese postmenopausal women taking green tea leaf extract for 60 days, fat burning rose, waist size and CRP inflammation markers fell, and insulin levels dropped compared with placebo.A 60-Day Green Tea Extract Supplementation Counteracts the Dysfunction of Adipose Tissue in Overweight Post-Menopausal a…
- In 27 overweight exercising adults over 8 weeks, 400 mg of decaffeinated green tea extract daily did not change body composition compared with placebo, although a version with added quercetin and alpha-lipoic acid improved fat burning during exercise.The Impact of Decaffeinated Green Tea Extract on Fat Oxidation, Body Composition and Cardio-Metabolic Health in Overweig…
- In healthy active men, 28 days of decaffeinated green tea extract did not increase fat burning during moderate exercise compared with placebo.Variable duration of decaffeinated green tea extract ingestion on exercise metabolism.
- In a small crossover trial of 13 women, matcha green tea drinks taken before a 30-minute brisk walk increased fat burned during exercise, but the authors warn this effect should not be overstated for weight loss.Matcha Green Tea Drinks Enhance Fat Oxidation During Brisk Walking in Females.
- In healthy young men, green tea extract taken over 24 hours 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 10 overweight or obese men taking 300 mg of green tea EGCG for 3 days, fat burning after a meal rose compared with placebo, though fat burning before a meal did not change with this dose.Epigallocatechin-3-gallate and postprandial fat oxidation in overweight/obese male volunteers: a pilot study.
- In 8 healthy men in 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 obese adults, epigallocatechin gallate for 4 or 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 8 healthy young men, 8 weeks of green tea extract (500 mg daily) increased fat burning after exercise compared with placebo but did not improve muscle glycogen refilling.Effect of green tea extract supplementation on glycogen replenishment in exercised human skeletal muscle.
- In an open study of moderately obese patients taking green tea extract AR25 for 3 months, body weight fell by 4.6% and waist size by 4.48%, but there was no control group.Recent findings of green tea extract AR25 (Exolise) and its activity for the treatment of obesity.
- In 32 healthy women, a single cup of white tea raised resting calorie burn by about 8.7% over 3 hours, a short-term effect that does not show lasting weight change.Acute change in resting energy expenditure and vital signs in response to white tea consumption in females: a pilot stud…
- In eight obese adults with metabolic syndrome, three months of daily green tea extract bread lowered how much dietary fat they absorbed, but body weight and body fat did not change.Green tea influences intestinal assimilation of lipids in humans: a pilot study.
Review Totals and Summary
Members Only1,763 reviews · 92% positive
Thorne Green Tea Phytosome capsules are mostly well liked, with about 535 ratings across the stores and most buyers satisfied. The written feedback is thin and mixed on how much it does, and a few buyers felt no difference at all. Reviews of other forms of the product were left out; this covers the capsules only. **What buyers say it did for them:** The most common praise is a gentle lift without caffeine side effects. One says it "Gives me a boost each day but without headaches and jitters." Another reports "No stomach upset, I did have more energy." One buyer felt less groggy and slept better, noting that one capsule did nothing at first but two worked for them. Others use it for weight management: "a must have if you're working on that waist line." A store summary adds that one reviewer found the fat-oxidation effect modest rather than magic, but helpful for someone on a calorie deficit or strict diet. Several people use it alongside other supplements, and one says it "supercharges my stack" even though it doesn't feel like much alone. **What they complain about:** The main complaint is that people noticed nothing. Buyers wrote "really could not tell a difference so discontinued use" and "not sure if the supplement is doing anything." One reported "No weight loss or bloat relief, I started having migraines." Another got agitated after one capsule a day and was puzzled, since "it said caffeine free." One buyer never received the item. Store summaries say a couple of reviewers who had used it for a month or more still felt no difference, and that one acknowledged subtle effects can be hard to notice. **Taste, smell, pill size, form:** Nobody mentions taste or smell. One store summary says a reviewer liked the size and quality of the brand, and another says the size and packaging suit people of all ages. The one packaging request is a flip-top cap: "I do hope for flip top cap one day." Delivery is described in a store summary as easy and quick. **Value for money:** Price does not come up in the reviews. One store summary specifically notes that no written review complains about price. Others describe the quality as excellent, and one calls it the best-quality green tea ingredient on the market, which suggests buyers feel they get a good product, though no one weighs cost directly. **Who it seems to suit and who it did not:** It seems to suit people who want green tea benefits without caffeine, who tolerate supplements poorly on the stomach, or who are adding it to a diet, training or existing supplement routine. One reviewer who is a restless sleeper valued the change in sleep and grogginess, and mentions that dosing can be adjusted to preference. It suited less well people expecting a clear, standalone effect, those who felt nothing after a month, and the buyers who had migraines or agitation. Results look personal, and several reviewers framed it as a supporting piece of a routine rather than a fix on its own.
Biohacker Summary
Members Only10 of 10 recommend it
Most of the panel uses or recommends green tea, and only one of the ten gives a clear warning. People take it for visceral fat loss, fat burning when drunk fasted in the morning, focus and calm energy, gut health, and as a swap for coffee. Most of them talk about drinking it as tea, though one takes a couple of green tea capsules in the morning and another notes an extract that is high in EGCG (a green tea compound). Lemon or other citrus is the most common pairing, said to help the body hold on to more of the tea's catechins (its main active compounds), and one also pairs it with MCT oil, and one panelist adds vitamin C. The one warning says very high doses of EGCG or extract could harm the liver, that green tea contains oxalates tied to kidney stones, and that it may deplete folic acid and may not suit pregnancy; another found it did not extend lifespan in animal studies, and the panel gave only one exact amount, 2 cups a day.
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.
- Mentions that green tea's EGCG has stimulated autophagy in cultured liver cells and mouse experiments by increasing AMPK.
- 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.
- 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.
- Drank 2–3 cups of green tea per day to reduce visceral fat.
- Reduced visceral fat by adding 2 cups of green tea per day.
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 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.
- Recommends sipping green tea while walking fasted in the morning to help extend the fat oxidation window.
- 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.
- Recommends switching to a good quality green tea first thing in the morning because it is lower in caffeine and contains theanine, which has a cortisol-blunting effect, balancing out the stimulation.
- Recommends green tea, mentioning its EGCG content.
- Would want green tea for its EGCG, which is a good antioxidant, especially for managing stress.
- Recommends green tea as an alternative to pre-workouts, highlighting caffeine as the key ingredient.
Dr. Eric Berg · Green Tea · neutral
- Suggests pairing green tea with lemon for better absorption.
- Suggests incorporating anti-cancer foods like green tea to help prevent pancreatic cancer.
- Recommends replacing coffee with green tea.
- Mentions green tea as an ingredient that can bring something different to the table for liver health.
- 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.
- 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.
- Suggests that green tea can be beneficial to counter some of the effects of a hypoxic state in cancer and inflammation.
- Recommends focusing on consuming green tea for cancer prevention.
Dr. Mark Hyman · Green Tea · neutral
- Mentions that EGCG from green tea activates thermogenesis, contributing to calorie burning.
- States he was using green tea to stimulate the NRF2 pathway and open up detox.
- 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.
- Was given green tea as part of a program to rehab his gut and rebuild bacteria.
- Mentions green tea extract as another NRF2 activator.
- Recommends green tea as a source of catechins, which have been shown to reduce the incidence of influenza and common cold symptoms.
- Mentions that green tea can modify the expression of genes, which in turn affects stress response and mental health.
- Recommends green tea to help lower high uric acid levels.
- Takes Green tea as part of his supplement regimen.
Andrew Huberman · Green Tea · uses
- Drinks green tea and believes it has very positive cognitive benefits in terms of focus.
- 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.
- Says he takes Athletic Greens AG1 every morning to cover his foundational nutritional needs.
- Has been taking Athletic Greens, now called AG1, since 2012, once or twice a day, for the probiotics it provides for gut health.
- Mentions green tea extract as one of many herbal compounds that people claim can increase hair growth, but notes a lack of robust clinical studies.
- Has been taking Athletic Greens since 2012 and still takes it once or twice a day for probiotics and gut health.
- Thanks Athletic Greens AG1 for sponsoring the episode.
- Huberman has been taking Athletic Greens AG1 once or twice a day since 2012 because it covers all his nutritional bases, including probiotics important for the gut-brain axis.
Dave Asprey · Green Tea · warns
- Warns that very high doses of EGCG or green tea extract could cause harm to the liver.
- 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.
- Warns that green tea is full of oxalate, which clogs kidneys and is a major cause of kidney stones, and also blocks the ability to use folic acid or folate.
- Notes that green tea contains L-Theanine, but a standard cup only has 20 to 30 mg, which is not enough to feel its true effects.
- Warns that drinking green tea will not lower SHBG, only a pill of EGCG, a rare extract of green tea, will.
- Combines green tea with puer tea and blends it with Kerrygold and a small amount of coconut oil or caprylic acid to magnify the effects of the tea, especially when traveling.
- Mentions that green tea extract EGCG will lower SHBG to a certain extent.
- Mentions a polyphenol product from Pendulum, specifically designed as a booster for the Akkermansia strain, containing extracts from pomegranates, green tea, and grape seeds.
Ben Greenfield · Green Tea · uses
- Drinks green tea in the morning as part of her quiet time.
- 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.
- States that healing leaves taste like black tea or green tea.
- Includes green tea extract in their Lumat blue product along with methylene blue, phycocyanin, riboflavin, lutein, and quercetin.
- Julie Gibson Clark drinks green tea in the morning as part of her quiet time.
- Ben Greenfield uses Pique tea, a powdered tea that is very useful when traveling, noting its cold extraction technology preserves phytonutrients and makes them more bioavailable, and it is triple toxin screened for purity.
- Ben Greenfield recommends green tea or green tea extract as an easier-to-find supplement that can act like a med and also as an exercise mimetic.
- States that when he does cold therapy, he likes to take something that will increase brown fat activation, like green tea.
Bryan Johnson · Green Tea · uses
- Takes Athletic Greens AG1 in the morning for gut health.
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.
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.
- 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.
- Notes that green tea, containing EGCG, activates FOXO3, which combats cellular aging.
RAL Summary
Members OnlyTier 2 for Weight and Metabolism for Men
Several large pooled analyses, the largest covering 6171 people, show modest extra weight and waist loss with green tea at doses like this one [1][2]. Among 1773 reviews, 92% are positive, which meets the review requirement for this tier.
Where the evidence disagrees: 15 of the 53 human studies found no effect.
More Details
Members OnlyBody systems · Combine with · Possible side effects
Body systems: Metabolism, Fat tissue, Cardiovascular system, Nervous system
Combine with: For its actual metabolic and antioxidant purpose, green tea phytosome pairs well with berberine or chromium for glucose handling, omega-3 fish oil for cardiometabolic support, and alpha-lipoic acid or resveratrol for additional antioxidant and insulin-sensitivity support. Take it with food to reduce stomach upset. If your true goal is fast post-meal upper-abdominal comfort, look instead at products with digestive enzymes (protease, lipase, amylase), ginger, peppermint oil, artichoke leaf, bitter herbs such as gentian, or betaine HCl if low stomach acid is suspected, and consult a clinician for persistent symptoms.
Possible side effects: The studies report no major side effects. A few buyers reported migraines or agitation even though the product is decaffeinated.
Supplement Facts
Green Tea Phytosome 250 mg
| Green Tea Phytosome | 250 mg | † |
Other ingredients: High and low viscosity Hydroxypropyl Methylcellulose, Calcium Citrate, Calcium Laurate, Hypromellose capsule, Leucine, Silicon Dioxide.
Directions: Suggested use: Take 1 capsule two to three times daily or as recommended by your health-care practitioner.
Barcode (UPC) 693749336020 · Label source: NIH label database · Report a label change
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Graded November 5, 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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