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.

Product Focus: Weight and Metabolism for WomenAlso covers:BrainHeart
Tier ⓘ
Tier 4 · Rank 2
Tier 4 · Emerging. A promising mechanism or animal data, with thin human evidence so far. Rank 2 within Tier 4 for Weight and Metabolism for Women; 16 of 17 overall. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
31 /100
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Biohacker Mentions
8 of 10

Study, Trial or Testing Result Summary

Members Only80 human studies · 41 improved
80 human studies41 improved27 no effect32,523 people studied

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

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
8 of 10 biohackers on our panel 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
    • 31 Oct 2026 · recommends · Instagram ↗
      States that green tea is very effective for visceral fat loss due to its polyphenol content.
    • 27 Oct 2026 · uses · Instagram ↗
      Personally drinks 2 cups of green tea a day and made it one of the small changes while reducing his visceral fat.
    • 25 Oct 2026 · Caffeine · recommends · Instagram ↗
      Recommends stopping caffeine earlier to improve sleep.
    • 19 Oct 2026 · neutral · YouTube ↗
      Mentions that green tea's EGCG has stimulated autophagy in cultured liver cells and mouse experiments by increasing AMPK.
    • 19 Oct 2026 · Caffeine · neutral · YouTube ↗
      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.
    • 12 Oct 2026 · Caffeine · recommends · Instagram ↗
      Recommends moving caffeine intake earlier in the day because having it too late can disrupt sleep, especially for slow metabolizers.
    • 12 Oct 2026 · Caffeine · warns · YouTube ↗
      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.
    • 11 Oct 2026 · uses · YouTube ↗
      Consumed more polyphenol-rich foods, including green tea, to reduce visceral fat.
    • 30 Sep 2026 · uses · YouTube ↗
      Mentions that he drank green tea, which targets visceral fat, as one of the things he did to reduce visceral fat.
    • 28 Sep 2026 · Caffeine · warns · YouTube ↗
      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.
    • 26 Sep 2026 · uses · X ↗
      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.
    • 26 Sep 2026 · recommends · X ↗
      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.
    • 25 Sep 2026 · uses · YouTube ↗
      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.
    • 25 Sep 2026 · Caffeine · recommends · YouTube ↗
      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
    • 30 Oct 2026 · uses · YouTube ↗
      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.
    • 29 Oct 2026 · uses · YouTube ↗
      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.
    • 29 Oct 2026 · Caffeine · neutral · YouTube ↗
      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.
    • 27 Oct 2026 · Caffeine · warns · YouTube ↗
      Warns that treating brain fog with caffeine without addressing underlying inflammation is ineffective and likely to make the situation worse.
    • 21 Oct 2026 · Caffeine · uses · Facebook ↗
      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.
    • 21 Oct 2026 · Caffeine · uses · Instagram ↗
      Says that caffeine significantly increased fat metabolism and that at low intensity cardio or exercise caffeine works better at mobilizing and utilizing fat.
    • 16 Oct 2026 · recommends · Facebook ↗
      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.
    • 16 Oct 2026 · recommends · Facebook ↗
      Recommends adding citrus, specifically lemon, to green tea to reclaim the benefits of catechins, as it can leave 80% of them intact.
    • 14 Oct 2026 · Caffeine · uses · YouTube ↗
      Might have some caffeine before fasted training.
    • 26 Sep 2026 · Caffeine · recommends · YouTube ↗
      Recommends caffeine as a must on the fasting day to create a low-grade energy demand that forces the body to favor lipolysis.
    • 11 Sep 2026 · recommends · YouTube ↗
      Recommends sipping green tea while walking fasted in the morning to help extend the fat oxidation window.
    • 2 Sep 2026 · Caffeine · recommends · YouTube ↗
      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.
    • 1 Sep 2026 · Caffeine · recommends · Instagram ↗
      States that caffeine is probably the most studied ergogenic aid with a profound effect on fat mobilization, suggesting that simple is better.
    • 31 Aug 2026 · recommends · YouTube ↗
      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
    • 17 Oct 2026 · neutral · Instagram ↗
      Suggests pairing green tea with lemon for better absorption.
    • 25 Sep 2026 · Caffeine · warns · Podcast ↗
      Warns that caffeine can keep you awake and advises to watch out for hidden sources of caffeine.
    • 18 Sep 2026 · recommends · Instagram ↗
      Suggests incorporating anti-cancer foods like green tea to help prevent pancreatic cancer.
    • 14 Sep 2026 · Caffeine · warns · Facebook ↗
      Stimulating the body with caffeine can actually make fatigue worse.
    • 10 Sep 2026 · recommends · X ↗
      Recommends replacing coffee with green tea.
    • 8 Sep 2026 · Caffeine · warns · Facebook ↗
      Dr. Berg warns that stimulating the body with caffeine can actually make fatigue worse.
    • 7 Sep 2026 · neutral · Facebook ↗
      Mentions green tea as an ingredient that can bring something different to the table for liver health.
    • 31 Aug 2026 · Caffeine · warns · Instagram ↗
      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.
    • 25 Aug 2026 · recommends · Facebook ↗
      Recommends replacing coffee with green tea as a step towards improving energy levels and brain functioning.
    • 20 Aug 2026 · recommends · Facebook ↗
      Recommends drinking green tea for EGCG, which benefits many things, from weight loss to cancer prevention.
    • 16 Aug 2026 · recommends · Facebook ↗
      Dr. Eric Berg recommends green tea as a home remedy to help prevent hair loss and regrow hair.
    • 3 Aug 2026 · Caffeine · warns · Facebook ↗
      Warns that even a lot of caffeine in the morning can inhibit melatonin at night.
    • 29 Jul 2026 · Caffeine · warns · Instagram ↗
      Warns that coffee does not give you energy; instead, caffeine binds to adenosine receptors, inhibiting sleep signals and merely preventing sleepiness.
    • 22 Jul 2026 · neutral · Instagram ↗
      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
    • 30 Sep 2026 · neutral · YouTube ↗
      Mentions that EGCG from green tea activates thermogenesis, contributing to calorie burning.
    • 7 Oct 2026 · Caffeine · warns · YouTube ↗
      Discusses with patients their caffeine consumption, suggesting that too much caffeine can artificially increase their stress response.
    • 17 Sep 2026 · Caffeine · recommends · X ↗
      Recommends stopping caffeine by noon.
    • 31 Aug 2026 · Caffeine · neutral · YouTube ↗
      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.
    • 29 Jul 2026 · uses · YouTube ↗
      States he was using green tea to stimulate the NRF2 pathway and open up detox.
    • 20 Jul 2026 · Caffeine · warns · YouTube ↗
      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.
    • 29 Jun 2026 · Caffeine · neutral · Facebook ↗
      Notes that caffeine is one of the things that drives the hormone imbalance causing PMS.
    • 1 Jun 2026 · Caffeine · warns · YouTube ↗
      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.
    • 25 May 2026 · Caffeine · warns · YouTube ↗
      Warns that caffeine, alcohol, and spicy foods can be potent triggers for hot flashes, and excess caffeine should be avoided.
    • 21 May 2026 · Caffeine · warns · Facebook ↗
      Warns that adding fiber does not cancel out the negative effects of caffeine and other processed additives.
    • 18 May 2026 · Caffeine · warns · YouTube ↗
      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.
    • 14 May 2026 · Caffeine · warns · Facebook ↗
      Warns that caffeine without adequate protein creates blood sugar chaos, sending a stress signal to the brain and hindering healing.
    • 29 Apr 2026 · neutral · YouTube ↗
      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.
    • 8 Oct 2025 · neutral · YouTube ↗
      Lists green tea extract as a phytochemical that helps mitochondrial function.
  • Andrew Huberman · Green Tea · uses
    • 28 Sep 2026 · uses · YouTube ↗
      Drinks green tea and believes it has very positive cognitive benefits in terms of focus.
    • 26 Oct 2026 · Caffeine · uses · YouTube ↗
      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.
    • 26 Oct 2026 · Caffeine · neutral · Podcast ↗
      Mentions caffeine in a discussion about supplement use.
    • 22 Oct 2026 · Caffeine · neutral · Podcast ↗
      Discusses caffeine timing as a tool related to sleep.
    • 22 Oct 2026 · Caffeine · warns · YouTube ↗
      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.
    • 1 Oct 2026 · Caffeine · recommends · YouTube ↗
      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.
    • 1 Oct 2026 · Caffeine · neutral · Podcast ↗
      Discusses caffeine as a tool for improving attention, noting its impact on focus and sleep.
    • 28 Sep 2026 · Caffeine · uses · YouTube ↗
      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.
    • 28 Sep 2026 · Caffeine · uses · Podcast ↗
      Discusses caffeine and its health benefits.
    • 6 Aug 2026 · Caffeine · recommends · Podcast ↗
      Recommends caffeine as a tool to increase motivation and dopamine.
    • 6 Aug 2026 · Caffeine · uses · YouTube ↗
      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.
    • 13 Jul 2026 · uses · X ↗
      Uses Athletic Greens AG1 in the morning for gut health.
    • 29 Jul 2024 · uses · YouTube ↗
      Takes a couple of green tea capsules in the morning.
    • 6 May 2024 · uses · YouTube ↗
      Includes green tea in his diet because its EGCG compound has been shown to stimulate GLP-1.
  • Dave Asprey · Green Tea · warns
    • 9 Sep 2026 · warns · YouTube ↗
      Warns that very high doses of EGCG or green tea extract could cause harm to the liver.
    • 31 Oct 2026 · Caffeine · uses · YouTube ↗
      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.
    • 23 Oct 2026 · Caffeine · recommends · Instagram ↗
      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.
    • 22 Oct 2026 · Caffeine · recommends · YouTube ↗
      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.
    • 11 Oct 2026 · Caffeine · recommends · Podcast ↗
      Dave explains why the 1:2 ratio of caffeine to L-theanine beats coffee alone for working memory, accuracy, and calm, sustained concentration.
    • 3 Oct 2026 · Caffeine · uses · YouTube ↗
      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.
    • 1 Oct 2026 · Caffeine · stopped · YouTube ↗
      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.
    • 3 Sep 2026 · Caffeine · uses · YouTube ↗
      States that caffeine is one of his superpowers and increases the rate of ketone formation, which fuels neurons.
    • 31 Aug 2026 · Caffeine · uses · Instagram ↗
      Once I’ve hydrated and taken my creatine, I reach for Danger Coffee for caffeine and essential minerals in one cup.
    • 22 Aug 2026 · Caffeine · uses · YouTube ↗
      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.
    • 13 Aug 2026 · Caffeine · warns · YouTube ↗
      Does not believe caffeine is a nootropic, considering it just a stimulant.
    • 5 May 2026 · neutral · YouTube ↗
      Mentions green tea as a source of EGCG but notes it also contains oxalates.
    • 17 Feb 2026 · warns · YouTube ↗
      Warns that green tea depletes folic acid and may not be advisable during pregnancy, or at least should be taken with folic acid.
    • 30 Dec 2025 · warns · YouTube ↗
      Mentions that green tea contains oxalate, though it is lower than black tea and matcha.
  • Ben Greenfield · Green Tea · uses
    • 20 Aug 2026 · uses · YouTube ↗
      Drinks green tea in the morning as part of her quiet time.
    • 24 Oct 2026 · Caffeine · stopped · Facebook ↗
      Came off caffeine for a year after his separation.
    • 24 Oct 2026 · Caffeine · stopped · Podcast ↗
      Quit caffeine in the same year he quit testosterone replacement therapy and alcohol.
    • 22 Oct 2026 · Caffeine · uses · YouTube ↗
      Uses caffeine, such as coffee or green tea, in his morning fasted fat-burning session to slightly increase the oxidation of fats.
    • 17 Oct 2026 · Caffeine · warns · YouTube ↗
      Advises against relying on caffeine for morning energy, suggesting that natural sugar-based stimulants combined with hydration and meditation can provide sufficient wakefulness.
    • 27 Sep 2026 · Caffeine · recommends · Facebook ↗
      Recommends Caffeine, noting that it can improve focus, mood, and training, help control appetite, raise calories burned, and reduce fatigue.
    • 18 Sep 2026 · Caffeine · neutral · X ↗
      Notes that 3 mg/kg of caffeine increases fat oxidation by 31%, and 5 mg/kg increases it by 51% compared to a placebo.
    • 16 Sep 2026 · Caffeine · neutral · X ↗
      Caffeine on its own isn’t particularly impressive as an ergogenic aid, but when combined with taurine, there are significant increases in power production.
    • 14 Sep 2026 · Caffeine · neutral · X ↗
      Mentions that caffeine can help mitigate the negative effects of a caloric deficit on lean muscle mass and metabolism.
    • 11 Sep 2026 · Caffeine · neutral · X ↗
      Has talked before about caffeine as a supplement that seems to assist with sleep deprivation.
    • 5 Sep 2026 · Caffeine · warns · X ↗
      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.
    • 25 Apr 2026 · uses · YouTube ↗
      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.
    • 26 Mar 2026 · recommends · YouTube ↗
      Suggests that one could do a carnivore diet and still have a cup of green tea in the morning to introduce hormetic stressors.
    • 9 Oct 2025 · recommends · YouTube ↗
      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
    • 7 Mar 2026 · uses · X ↗
      Takes Athletic Greens AG1 in the morning for gut health.
    • 23 Sep 2026 · Caffeine · uses · YouTube ↗
      Drinks coffee when starting to fade, ensuring the last cup is between 10 and 12 hours before bed so caffeine doesn't affect sleep.
    • 18 Jun 2026 · Caffeine · uses · X ↗
      Used 300 mg of caffeine in the morning as part of their jet lag recovery.
    • 7 Jun 2026 · Caffeine · uses · X ↗
      Uses 300 mg of slow release caffeine in the morning as part of a jet lag recovery protocol.
    • 25 Apr 2026 · Caffeine · neutral · X ↗
      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.
    • 19 Nov 2025 · Caffeine · warns · YouTube ↗
      Notes that the culture in DC involves running on caffeine, along with alcohol and sleep deprivation, leading to poor nutrition and an unhealthy environment.
    • 3 Jul 2025 · Caffeine · warns · YouTube ↗
      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.
    • 12 Apr 2025 · Caffeine · recommends · YouTube ↗
      Recommends consuming no caffeine past noon due to its 6-hour half-life, suggesting that if sleep is nailed, caffeine might not be needed.
    • 6 Nov 2024 · Caffeine · warns · YouTube ↗
      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.
    • 16 Oct 2024 · Caffeine · stopped · YouTube ↗
      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.
    • 23 Mar 2024 · Caffeine · stopped · YouTube ↗
      Has stopped all caffeine, as it has helped him improve his sleep.
  • Peter Attia · Green Tea · neutral
    • 8 Feb 2021 · neutral · YouTube ↗
      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.
    • 16 Aug 2026 · Caffeine · uses · YouTube ↗
      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.
    • 4 Jan 2026 · Caffeine · neutral · YouTube ↗
      Mentions data suggesting caffeine might be more helpful in the luteal phase to help with fatigue components.
    • 12 Dec 2025 · Caffeine · uses · YouTube ↗
      Uses caffeine in combination with Alpha GPC, MCT, and Theanine, often adding it to coffee for long periods of cognitive work.
    • 7 Dec 2025 · Caffeine · uses · YouTube ↗
      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.
    • 4 May 2025 · Caffeine · neutral · YouTube ↗
      Mentions that experimenting with the timing of caffeine is a great idea for sleep.
    • 27 Mar 2025 · Caffeine · warns · YouTube ↗
      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.
    • 23 Mar 2025 · Caffeine · warns · YouTube ↗
      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.
    • 10 Dec 2024 · Caffeine · neutral · YouTube ↗
      States that caffeine does not wake him up, which contributed to his belief that he did not have an addiction gene.
    • 14 Oct 2024 · Caffeine · neutral · YouTube ↗
      States that caffeine does not wake him up.
    • 10 Oct 2024 · Caffeine · warns · YouTube ↗
      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
    • 4 Sep 2013 · neutral · YouTube ↗
      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.
    • 26 Oct 2026 · Caffeine · neutral · Instagram ↗
      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.
    • 2 Oct 2026 · Caffeine · recommends · YouTube ↗
      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.
    • 30 Sep 2026 · Caffeine · recommends · Facebook ↗
      Recommends pairing coffee with L-theanine to enhance cognitive performance, noting that L-theanine can help balance caffeine’s stimulatory effects.
    • 28 Sep 2026 · Caffeine · warns · YouTube ↗
      Recommends cutting out caffeine in the three months before conception for both men and women, as it affects sperm.
    • 14 Aug 2026 · Caffeine · recommends · Facebook ↗
      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.
    • 5 Jun 2026 · Caffeine · recommends · Instagram ↗
      Recommends cutting down or eliminating caffeine when actively trying to conceive.
    • 27 May 2026 · Caffeine · warns · Facebook ↗
      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.
    • 24 Mar 2026 · Caffeine · uses · YouTube ↗
      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.
    • 6 Feb 2026 · Caffeine · neutral · Instagram ↗
      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.
    • 8 Oct 2025 · Caffeine · neutral · X ↗
      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.
    • Date not recorded · neutral · Website ↗
      Notes that catechins in green tea have antioxidant, anti-inflammatory, and anticarcinogenic properties, and their bioavailability can be increased by adding vitamin C.
    • Date not recorded · recommends · Website ↗
      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.
    • Date not recorded · neutral · Website ↗
      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
Supplement Facts
Serving Size 1 Softgel(s)
Amount Per Serving% Daily Value
Calories5
Green Tea (Camellia sinensis) (leaf) extract250 mg†
Caffeine50 mg†
† Daily Value not established.

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.