Fat Loss Biology

Boosting Green Tea Weight Loss

Green Tea Weight Loss Flower

Green tea weight loss depends on bioavailability of the active ingredient EGCG from green tea extracts. Phytosome technology doubles the bioavailability, which significantly boosts weight loss. Here is a summary of the study..

Green Tea Weight Loss Study

Development of phytosome technology for green tea extraction has shown to double bioavailability of EGCG and enhance its antioxidant power. The technology is now available to supplement manufacturers under the name, GreenSelect Phytosome. See my post on this research here: Green Tea Weight Loss – The Real Science.

Green Tea Weight Loss - GreenSelect Phytosome

The first clinical study of weight loss with GreenSelect Phytosome compared a low-calorie diet (control) against a low-calorie diet supplemented with the new green tea product (treatment). Here are the citation data and the published abstract of this study:

Di Pierro F, Menghi AB, Barreca A, Lucarelli M, Calandrelli A. 2009. Greenselect Phytosome as an adjunct to a low-calorie diet for treatment of obesity: a clinical trial. Altern Med Rev. 2009 Jun;14(2):154-60.

A recently developed oral formulation in the form of coated tablets (Monoselect Camellia) (MonCam) containing highly bioavailable green tea extract (GreenSelect Phytosome) was tested in obese subjects (n=100) of both genders on a hypocaloric diet. Fifty subjects were assigned to the green tea extract plus hypocaloric diet, while the other 50 subjects followed the hypocaloric diet only. After 90 days of treatment, significant weight loss and decreased body mass index (BMI) were observed in the group taking the herbal extract (14-kg loss in the green tea group compared to a 5-kg loss in the diet-only group); waistline was reduced only in male subjects. Besides the effect on weight and BMI, biochemical parameters (LDL-, HDL-, and total cholesterol, triglycerides, growth hormone, insulin-like growth factor-1, insulin, and cortisol) were improved in both groups. Leptin, not tested in the diet-only group, was reduced in patients taking MonCam. Taking into consideration the high safety profile of the product and the total absence of adverse effects observed during and after the trial, MonCam appears to be a safe and effective tool for weight loss.

The main results included improvement in several biochemical markers. However, the key outcome was weight loss, as shown in Table 1 from the study:

Green Tea Weight Loss Variation Results

The hypocaloric diet referred to in the abstract and in the table entailed 1,850 Calories per day for men and 1,350 Calories per day for women. Results are expressed in kilograms (kg). A difference of 8.192 kg at 90 days computes to 18 lbs. The difference between control and treatment groups was statistically significant at 90 days, but not statistically significant at 45 days.

Finding Products Containing GreenSelect Phytosome

Since the technology is patented, supplement manufacturers must have a license to include it in green tea products. The first companies to do so were Thorne Research, which produces supplements for health care professionals, and Natural Factors, which is more widely available on the internet. You can search for it under GreenSelect Phytosome or under the brand name MonCam.

This is the best oral preparation of green tea extract on the market.

Updating green tea weight loss research,

Dr. D

6 Comments so far »

  1. by Green Tea Weight Loss - The Real Science | How To Lose Belly Fat Simply And Easily


    […] The question regarding green tea weight loss is now: Does Greenselect Phytosome give better results that other green tea preparations? The answer is yes, as I’ve posted here: Boosting Green Tea Weight Loss. […]

  2. by Dr. Frank Ryan Fat Loss Hype | The Diet Pills Review - Real science behind diet pills


    […] All of these ingredients are readily available in nutrition stores at excellent prices. They are not expensive unless they are enhanced in some way (e.g., regarding green tea extracts, see Boosting Green Tea Weight Loss). […]

  3. by Xyngular Weight Loss - Where Is The Real Science | The Diet Pills Review - Real science behind diet pills


    […] specifically to enhance bioavailability if they are going to be helpful for weight loss. (See: Boosting Green Tea Weight Loss.) ACCELERATE does not contain this type of green tea extract because the label does not cite the […]

  4. by David Achman



    I’m interested in adding the green tea phytosome to
    my supplements. Could you give me a guideline on how much/per day and frequency for the most effective use of this extract? any feedback is appreciated thanks so much for your work and making this available. I will probably use the natural factors brand.

    All the Best

  5. by David


    Dr Clark

    I would like to incorporate the green tea phytosome into my supplement regimen and was wondering what the dosage amount should be per day and frequency and is there a recommended brand?

  6. by Dr. Dennis Clark


    Hi, David: Yes, I do have a product that I use. It is by Thorne Research. You may be able to get it online…just search for Thorne Research and Green Tea Phytosome. Take 3 per day. If you don’t find it (they are pretty picky about who can sell their stuff…it is for health professionals), let me know and I will see what I can do for you.

    All the best,

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