Update 7/19/22. Does green tea help you lose weight? More specifically, does Mega T Green Tea helps weight loss? That's the question I asked myself when I first saw Mega T Green Tea in stores and in TV commercials. For this review, I went to the Mega Green Tea website and also investigated the company which makes this green tea supplement. I also searched for the weight loss evidence for Mega T Green Tea and the evidence for each of Mega T Green Tea's ingredients.
Mega Green Tea Products
I will focus on the company's product most familiar product—Mega T Green Tea —but I quickly discovered on the product's website (mega-diet.com) that there are several versions of this green tea weight loss supplement. They are:
- Mega Green Tea with Acai
- Mega T Green Tea water pill
- Mega Green Tea packets
- Caffeine-free Mega Green Tea
Mega Green Tea Ingredients
According to the product's website (mega-diet.com) Mega T Green Tea has these ingredients:
| Calcium carbonate | 100 mg |
| Chromium | 250 mcg |
| Proprietary blend 750 mg | |
| Green tea leaf extract | |
| Caffeine | |
| Eleuthero root extract | |
| Fo ti root | |
| Garcinia extract | |
| Guarana seed extract | |
| Bladderwrack kelp | |
| Gotu kola |
The first thing to understand is that there is no published peer-reviewed evidence for either Mega T Green Tea or its proprietary blend of ingredients. I know this is true because when I searched the National Library of Medicine for “Mega T Green Tea” and “Mega Green Tea” no studies showed up. Another issue I noticed was that I could not tell how much actual green tea is in Mega T Green Tea.
So, since the product itself seems to have no direct proof, let's look at the weight loss research on the ingredients in Mega T Green Tea and see what we can find.
Calcium Carbonate
Does calcium help you lose weight? Well, one 10-year-long study noted that people who consumed more calcium tended to weigh less. The trend was stronger for women than men so in men calcium might not work. One problem with the idea of calcium and weight loss is that other research finds that calcium does not help people lose weight.
While the issue of whether calcium works or not is a totally different problem, one thing to consider is that Mega T Green Tea does not provide a lot of calcium —only 100 mg per pill (or 300 mg if you take the suggested 3 pills per day). Either way, I'm generally not too impressed with the weight loss evidence I see for calcium supplements.
Tip. For comparison, one 8 oz cup of milk also has about 300 mg of calcium.
Chromium
Many weight loss supplements contain chromium. Just a few that I've already investigated include QuickTrim, Avesil, and Fat Stripper. This is ironic because there is a bunch of research showing chromium supplements do not promote weight loss.
Chromium may help blood sugar levels in those with diabetes so I can understand. Maybe they add it because we get hungry when our blood sugar falls and anything that helps keep our blood sugar from dropping might stop us from overeating? Ok—maybe—but as for chromium causing weight loss— I just don't buy it.
The proprietary blend in Mega Green Tea has several ingredients. We are not told how much each contributes to the blend, only that the total adds up to 750 mg. For this review, I will assume that the proprietary blend contains more of the ingredients listed at the top and less of those listed last.
Green Tea Leaf Extract
They don't tell us what green tea extract is in Mega T Green Tea. Even though they did not say it, I will assume that they are using the extract called EGCG (epigallocatechin gallate), as this green tea extract has been studied for weight loss.
In one EGCG weight loss study from 2002, the EGCG extract was given to overweight people for 3 months. Researchers noted that EGCG caused a 4.6% drop in body weight, and waist circumference decreased by 4.48%.
Another study from 2011 noted that EGCG reduced body fat in mice fed a high-fat diet. One study has noted that green tea extract given WITHOUT caffeine does not seem to help weight loss. In other words, caffeine seems to be needed if green tea extract /EGCG is going to work. Keep this in mind as you read the rest of the ingredients in Mega T Green Tea.
One problem I see with green tea weight loss research is that most of it seem to involve lab rat experiments. Where is all the human research?
In this 12-week-long human study, green tea supplements did not cause people to lose weight or increase their metabolism. The study lasted 3 months, long enough to see if green tea worked or not.
See the Supplements and Liver Failure review for more information.
Video: Can Green Tea Help Diabetes
Watch on my Youtube channel if you prefer
Caffeine
Caffeine has a mild fat-burning effect. This is why so many fat burner supplements contain caffeine. Also, as just mentioned, caffeine seems to be needed if green tea /EGCG is going to help weight loss. How much caffeine is in Mega T Green Tea? They don't specifically tell us on the product website, so I called CCA Industries—the company that makes Mega T Green Tea—and was told that 1 capsule contains 50 mg.
Just a couple of caffeine-weight loss pills I've already reviewed include SlimQuick and the Jillian Michaels weight loss pill.
Eleuthero Root Extract
Another name for this ingredient is Siberian ginseng. Many extracts are in Siberian ginseng but, again, which extract does Mega Green Tea have? They don't tell us, which makes reviewing this ingredient difficult.
I can say that I was not able to locate any Eleuthero root – weight – loss research. I've often seen this stuff in energy drinks and sports drinks, although research has noted that Eleuthero root does not help people exercise better.
Siberian ginseng —despite good proof that it works —is also found in the Healthe Trim weight loss supplement, and It Works Greens so see those for additional information.
Fo Ti Root
The scientific name for Fo ti is Polygonum multiflorum. I was not able to find any human research on fo ti root and weight loss. Most of the research I saw involved test tubes studies. There are human case reports of fo ti being linked to liver damage including hepatitis. Because fo ti was used in supplements alongside other ingredients, it is not known if fo ti caused liver problems or if it was something else.
See my review of Super Beta Prostate for more info on this.
Garcinia Extract
This is likely garcinia cambogia which also goes by the name hydroxy citric acid (HCA). Just a few other garcinia cambogia-containing supplements that I've already looked at include
- Healthe Trim
- Plexus Slim
- The diabetes supplement Diab-X
See the review of Garcinia weight loss research for more information
In one study of garcinia and weight loss from 2001, garcinia cambogia didn't seem to work. Two problems with this study were that the study only lasted 2 weeks and involved only 11 people. But, it did use 500 mg of garcinia cambogia.
I'm guessing this is more than is in Mega T Green Tea because garcinia is listed #5 in the proprietary blend list and the total amount of ingredients only adds up to 750 mg. I admit I could be wrong on this point though since we are not told how much garcinia is in Mega T Green Tea supplements.
In a larger garcinia weight loss study from 1998 involving 135 overweight people, garcinia cambogia also was found not to work. This study lasted 3 months.
In a more recent weight loss study published in 2011, 86 overweight men and women were randomly given either garcinia cambogia or soybean extract (glycine max) or a placebo for 10 weeks. This study found that neither garcinia cambogia extract or soybean extract caused any significant weight loss or reduction in cholesterol levels.
On the flip side, in a meta-analysis review of garcinia cambogia and weight loss published in 2011 in the Journal of Obesity, researchers noted that there was some evidence that garcinia cambogia might help weight loss, but also noted that the effect was likely to be small and that more research was needed.
Note. Garcinia cambogia is not without controversy. In 2009 the FDA highlighted garcinia cambogia as possibly being responsible for cases of liver failure associated with Hydroxycut. Here is a PDF of an FDA article on Hydroxycut and here is the letter from the FDA to Iovate Health Sciences International, the maker of Hydroxycut. I believe Hydroxycut no longer contains garcinia cambogia.
Guarana Seed Extract
My guess is that the extract is probably caffeine. Guarana contains caffeine.
Bladderwrack Kelp
In other supplements, this ingredient is called Fucoidan and its scientific name is Fucus vesiculosus (just in case you research this stuff in the future).
So why would kelp be used in a weight loss supplement? Well, kelp contains iodine and, as mentioned above, iodine is needed to make thyroid hormone. Thyroid hormone, in turn, helps regulate metabolism. A lack of iodine in the diet may cause hypothyroidism, which makes it hard to lose weight.
One study from 1987 that lasted 2 years noted that bladderwrack kelp along with various other vitamins etc. did not help people lose weight. Unfortunately, I was not able to locate any other research on kelp and weight loss. This is too bad because I've noticed that kelp and iodine are showing up a LOT in weight loss and health supplements.
How To Test Your Iodine Levels
As was reported in the book, The Fatigue Solution, by an endocrinologist, Dr. Eva Cwynar it's possible to see if you are low in iodine. Get some USP tincture of iodine (not the clear version) and paint a 3-inch circle on your skin. The skin will look red/orange when you apply the iodine tincture. If the color disappears in 1-3 hours, you may be lacking in iodine. If, it takes 4-6 hours for the color to go away, your iodine levels are probably OK. Here is tincture of iodine on Amazon.com. Remember, do not drink tincture of iodine! If you feel you are deficient in iodine, go to your doctor for a more accurate test of your iodine levels.
Gotu Kola
The scientific name for gotu kola is Centella asiatica. Like all herbs, people say gotu kola helps a lot of different conditions. That said, I could not locate any weight loss research for gotu kola. Gotu kola might have a calming effect on the brain. I speculate that this may be why it's used in Mega T Green Tea. In other words, if we are calmer, we might not eat when over stressed by life? Again, I'm guessing at this.
Tip. The word “kola” in gotu kola always reminds me of caffeine-containing colas, however, gotu kola does not contain caffeine.
How Much Caffeine Is In Mega T Green Tea?
When I called the makers of Mega T Green Tea—CCA Industries—I was told each casual has 50 milligrams of caffeine. Originally, I was told that it had the same as a cup of coffee but the caffeine content of coffee can vary. I'll assume it has 50 mg of caffeine until I learn otherwise.
The Best Weight Loss Evidence
When taken as a whole, I see the “best” weight loss evidence for these ingredients:
- Caffeine
- Green tea (EGCG) maybe (I'm skeptical)
I am listing these ingredients so people can better pinpoint the ingredients that might do the most as far as weight loss is concerned. But, keep in mind that the “evidence” on these ingredients is far from what I would call “concrete” or “it's going to work.” Remember also that research, so far, seems to show that EGCG might not work unless its combined with caffeine.
If this really is true, then it's caffeine —alone —that may be the major weight loss ingredient in Mega T Green Tea. Of course, this is speculation on my part. I base this statement on the research I see and the fact that Mega T Green Tea itself seems to have no published peer-reviewed proof that it works.
Other Types Of Mega T Green Tea
I noticed that the decaffeinated Mega T Green Tea has 50 micrograms of iodine. I'm guessing that they have added this mineral because we need iodine to produce thyroid hormones (also called T3 and T4). So the idea is that if you eat more iodine, then you might make more thyroid hormone. Thyroid hormone in turn, helps you burn more calories. So, would iodine supplements speed up your metabolism and help you lose weight? Well, maybe a little, if you were deficient in iodine— but if you are not deficient I don't think so. I could be wrong on this. Either way, consider getting your iodine levels checked by your doctor to be sure.
As for Mega Green Tea with Acai, I see no published peer-reviewed proof that Acai berry helps people lose weight. Acai is a trendy ingredient in several weight loss products. For more on Acai see my reviews on Acai Berry itself as well as the Acai Berry Diet and the Acai health drink, MonaVie.
Who Makes Mega T Green Tea?
The company is called CCA Industries and it is located at 200 Murray Hill Parkway, East Rutherford, NJ 07073. Their phone # is (201) 935-3232. CCA Industries makes a variety of health and beauty aids and the company is also a publicly traded stock with the symbol “CAW”. According to the Better Business Bureau, CCA Industries was started in 1983 and it has a BBB rating of “A +”
Green Tea Side Effects
Since Mega T Green Tea has not itself been tested in peer-reviewed research, side effects are really not known. What I will mention here stems from what researchers think might happen, based on rational thought and case studies of other products that contained similar ingredients. Side effects of the ingredients in Mega T Green Tea do not necessarily mean that the same thing would happen with Mega T Green Tea itself.
As an aside, when I called CCA Industries – the company that makes Mega T Green Tea, their voice recording does make a reference to “contact extension 299” if you are experiencing a “medical emergency.” I'm going to assume they do this because anything is possible when millions of people take their products. In other words, it sounds to me like a precaution “just in case.” If I'm right, then what they are doing is smart thinking.
Since Mega T Green Tea has caffeine it may cause jittery feelings in those not used to caffeine. It will probably interfere with sleep if you take it close to bedtime.
There have been case reports of fo ti-containing supplements causing liver problems including hepatitis. Whether it was fo ti itself that caused hepatitis or other ingredients in the product is not known. I also want to be clear that as of this review, I am not aware of any proof that Mega T Green Tea causes any liver problems – or any harmful side effects for that matter.
Fo ti may interact with many different medications including but not limited to diabetes medications and blood thinners although there is no strong peer-reviewed proof of this currently. Fo ti also appears to have estrogen-like activity. As such, people with cancers that are sensitive to estrogen level fluctuations such as breast cancer should see their doctor before using fo ti products.
There is a possible link between garcinia cambogia and liver problems.
There are case reports of gotu kola and liver problems but so far no published peer-reviewed clinical trials seem to exist to substantiate this. The same lack of direct proof can be said for garcinia cambogia and fo ti as well.
Because kelp has iodine, consuming too much iodine could cause hyperthyroidism. Kelp is listed almost at the end of the proprietary blend ingredients so Mega Green Tea probably does not have much iodine. Still, the iodine in the product would add to any other iodine consumed normally in the diet. There may be other metals in kelp that may be dangerous if consumed in high amounts.
See the review of supplements that can cause liver failure for more info.
Does Mega T Green Tea Work?
I personally, would like to see a head-to-head comparison of the weight loss power between Mega T Green Tea and regular green tea (even Lipton Green Tea). While I think for the most part, the ingredients in Mega T Green Tea are tame compared to other products I've reviewed previously, what I see about liver problems and fo ti, and gotu kola make me go hmmm.
What I did like about the Mega Tea website is that it emphasized the role of exercise and healthy foods and even stress reduction. I also liked that they said that taking more of the green tea supplement would not speed up weight loss. I suggest that people who take any medications or who have health issues see their doctor before using Mega T Green Tea. Write down the ingredients and show them to your doctor and let the doctor make the call on whether this green tea supplement is ok for you. Or just drink green tea instead.
Your skepticism on Green Tea for weight loss is backed by my personal experience. Years ago Dr. Weil promised a certain number of pounds of weight loss if for 3 months one switched from daily coffee consumption to daily green tea consumption. –Now just to look at Dr. Weil, I could have surmised that he was not privy to the secrets of easy weight loss– but I was a daily coffee drinker and gave it a try. The result: zero weight loss.
DA, thanks for sharing your personal experience. Green tea continues to figure predominately in weight loss products. While it is healthy -I often toss the contents of a green tea bag into my smoothies – when it comes to weight loss, I think it’s a dud.
Thank you for the breakdown of the ingredients. It is very helpful information; however,I think it is important to mention that while being knowledgeable about the ingredients is beneficial, knowing and understanding the chemistry behind the ingredients and their interactions is crucial, in addition to understanding the biochemistry of the metabolic breakdown and absorption of the supplement into the bloodstream.
The body does not breakdown each ingredient individually. It is much more complex than that. It is terribly unfortunate that there isn’t more information available about this supplement.
The fact that there isn’t a sufficient amount of information available to the public about this supplement is worrisome and in my opinion, a very good reason to not purchase it, let alone ingest it.
Sarah, yes in the absence of research on the product itself, I’ll often look at its individual ingredients to try to see what might be going on.
Can you recommend a green tea extract? this was why I got Mega-t but never found out what it had in it as far as green tea extract. This is all Target had so I fell for it. Looking for EGCG (epigallocatechin gallate)
Raymond, why dont you go to your local health food store and ask them for a bottle of ECGC. I believe you can buy just this extract by itself. Amazon Link.” target=”_blank”>Here is a brand on Amazon I found that people seem to like.
i’ve been doing weight watchers for a while and find that taking the mega-t with acai helps my weight loss each week. when i ran out and didn’t take any capsules for two weeks i didn’t lose weight as quickly during those two weeks.
Ann, hmmm interesting stuff. As long as you are moving toward your weight loss goals, that’s whats most important to me 🙂
I personally lost 15 pounds in a month on these. I agree that somethings work for some but not all. But I just wanted to give my personal account because I just wanted people to know that its not just some pill with another fake claim.
I was always chubby and short growing up, so any extra weight looked wrong on me but after I took these that changed. Plus I didn’t change the way I ate but I would exercise on and off. Sssoooooo pretty much just try them like they’re cheap and if they don’t work for weight they will give you a bunch of energy. Ha. Oh, don’t take them past five or you’ll be up all night. 🙂
I bought the ones in a bottle from walmart, I didn’t see them listed on here but I use to use the originals that come in the push out tab things (those truly sucked -.-) & the others I never tried, so bottle good the rest idk.
Hi Sarah, can you describe the ones in a bottle I stated taking the push tab one but, would like to try the ones you are taking about thanks
This is just my opinion, but I feel if a product works for you while you are eating healthy and exercising then I will use it . I have lost 90 pounds by cutting out sugar, bread, pasta and no sodas .. diet or regular. I do not drink anything but water and unsweetened tea. I have used almost every product out there during this 90 pound weight loss .
Mega T so far in my opinion has been the best. It gives me energy, and helps with my cravings. I am having normal BM and I urinate normal. No weird colors as with other products I’m taking. I recommend if you have a large amount of weight to lose to see a Doctor, they will help you put together a healthy eating plan. Keep all your numbers and vitals in check.. and encourage you.
I needed to lose 100 plus pounds and I still have about 30 more to my goal. If you are like me .. you will try anything to lose weight. Trust me the extra pounds were far more dangerous than what these pills could ever do to my body!! I now jog 3 plus miles a day and when I started I could barely walk 10 minutes at a time.
I know that no weight loss pill will help me without a lifestyle change in eating and exercise… but I believe in this product and it is very inexpensive.. unlike many weight loss products.
So my advice is, try it for 30 days and see if you have any positive results . If not , you are only out about $4 . I hope this helps. My goal is to inspire other to get healthy and stay healthy .
Hi Joy, congratulations on losing 90 pounds! That is wonderful! I am also very happy to hear you are combing your weight loss with exercise. continued success with your last 30 pounds. Keep us posted on how you are making out. Happy 4th of July!
I’d like to say that I really believe in this product. I don’t know if it’s the caffeine, the diuretics, or the antioxidants but I feel much better after taking this supplement. Of course, I do maintain a healthy weight by diet and exercise, but if I have a few days of careless eating, I definitely feel much better after taking this. At 27 people still think I look like I’m 21..which makes me believe that the mega tea products have prevented damage from free radicals!!! 🙂
these supplements merely give you the energy needed to get off the couch and get on a treadmill. you cannot take this pill and lay around and eat pizza! you have to drink lots of water, engage in a low carb/sugar- high protein diet, do cardio and weight training, and stretch regularly to maximize weight loss. you also need to switch up your routine every few weeks to confuse muscles in order to avoid a plateau. once you start seeing results you wont want to stop. i take mega t and have seen results because i diet and exercise with it. nothing changes if nothing changes.
Thanks a great deal ‘anonymous’! Nothing changes if nothing changes!
I’m trying to look everywhere for a highly affective weight loss supplement and I want to make sure this will really help me lose weight before I pay for it. I’m a little afraid that some people say it works, for example a lady that commented on another review lost 5lbs in 3 days and some people say it doesn’t work…I need help!
Kennedy, if you ask me, I think Mega T Green tea is a fancy caffeine/stimulant supplement. Without changing what we eat, I’m not confident it will work.
Thank you for these comments. It really helps. I tried this one and it made me agitated and unfocused. I couldn ‘t complete my normal workout as if my system was drained and banking. The caffeine route is not working for me.
Kim, thanks for writing and sharing your thoughts.
If you take the pills and lose weight you have to change the way you eat or you will gain it back. It only makes sense. You have to cut calories and change the way you eat for it to be permanent. The pills actually give you a chance to lose weight but it’s up to you to make the changes that are necessary to keep it off.
I am taking them now for only a week and I feel energized and more regulated with my intestines. I am also following a sensible diet and exercising. I haven’t actually weight but I feel better already. I will continue to use the product and give my final observation.
I have tried this product and I have lost 20 lbs…. the only side effects that I noticed were the inability to sleep. Another thing is you would have to follow a diet plan and a exercise routine. The unfortunate thing is that you will gain the weight back once you stop taking the supplement.
I think it depends on the individual. I took these pills back in 2010 for 6months. I can say that they did curve my appetite and made me feel energized. I lost 56lbs, I don’t give ALL the credit to these pills because I also had a workout routine as well. I do believe they helped. Not everything works for everyone.
I just started these pills its day 1 and I constantly pee does anyone else have this problem
Meah, caffeine can make people pee if they are not used to it. Potentially this can lead to dehydration. try reducing how much you take and see if that helps.
I too have the frequent urination problem and was worried about it, until I noticed the link between caffeine. I cut that out of my diet almost completely. I’m glad we are in the same boat and I don’t have to freak out anymore haha
Just so you know, the leaflet inside the Mega-T package says each capsule contains 90 mg of EGCG and 50 mg of caffeine. (Their “ultra” products have 90 mg of EGCG and 150 mg of caffeine.)
Jen, thanks for telling me this!!! 🙂
Hi Joe, you might be interested in the calcium supplement advice that has hit little old NZ. Doctors were prescribing biggish doses of Calcium for older people to try and prevent osteoporosis, then the study came out showing that it increased heart disease. they think that the high peak of calcium in the blood meant some precipitated out into the artery walls increasing the plaque formation. They have stopped prescribing mostly and gone to recommending increased dietary calcium intake.
for those who really can’t manage this, they are suggesting 1/4 of a tablet twice a day to lower the height of the absorption peak. just thought this might interest you. thanks for your very informative blog. I found you looking for reviews of African mango.
Jo yes ive seen some research on this here is my review http://supplementclarity.com/calcium-supplements-and-heart-attacks/
Ive recently heard another study found similar findings
I took a brief look into the study that claimed decaffeinated green tea extract isn’t effective. Unfortunately, this meta-analysis only reviewed 2 studies on decaffeinated green tea extract. And these 2 studies have conflicting results (one experiment showed weight loss, the other did not).
The study you referred to is flawed for attempting to average the results of these 2 studies to claim that decaffeinated green tea extra has no noticeable affect. Instead this study should have indicated that results varied and more research is needed.
Full study:
http://www.ajcn.org/content/91/1/73.long
Relevant data:
http://www.ajcn.org/content/91/1/73/F2.large.jpg
anthony, thanks so much for mentioning those studies and i agree a meta analysis of only 2 studies leaves a lot to be desired. I’m stillskeptical of decaffeinated green tea but Im definitely open to better research. i hope it gets done soon.
DAMN, I BOUGHT THIS WITH ACAI…SO TIRED OF WASTING MY MONEY ON THESE SUPPLEMENTS AND I’VE ALREADY TRIED THE 1 DB GODDESS, WAS ABOUT TO BUY THE PRIME ONE UNTIL I READ YOUR STUDY. IS THERE A GOOD, FAT-BURNER THAT YOU CAN RECOMMEND? I’M CURIOUS IF YOU COULD DO A STUDY ON APIDEXIN? I’M CONSIDERING PURCHASING. THANK YOU.
Tee Tee, your in luck, Ive reviewed Apidexin http://supplementclarity.com/apidexin-review-weight-loss/
Most weight loss supplements are very similar. they are all either stimulates, fiber or laxatives . Here is something I wrote about this on my personal website
http://www.joe-cannon.com/what-weight-loss-supplements-work/
I tried Mega T and it did nothing for me and I mean nothing. There were no side effects (jitters, etc), no appetite suppression and definitely didn’t drop any weight or alter my shape.
Personally, I think caffeine’s effect on weight is minimal, if any. Based on MayoClinic article: http://www.mayoclinic.com/health/caffeine/HQ00369
A better way to loose weight is to avoid sugar and refined carbohydrates.
Blliss, Thanks for that and I’d agree. that’s why I said it had a mild effect. Caffeine is the main ingredient in many fat burner supplements.