Weight loss supplements contain an array of ingredients -- some supported by clinical evidence and some not. What's more, the quantity and quality of these ingredients may vary widely across brands. To make sense of it all, ConsumerLab.com reviewed and summarized the evidence behind each of the common weight loss ingredients and many popular formulas. Just as important, we tested products containing green tea or 7-keto DHEA -- two of the ingredients with clinical evidence behind them.
What did we find? Two 7-keto DHEA supplements met our quality requirements. We also found a product that provided the amount of EGCG (from green tea) associated with weight loss. However, we discovered in our tests that two weight loss supplements were missing one-third to one-quarter of the listed green tea; two others were contaminated with a carcinogenic form of chromium; and the label on a fifth highly-promoted supplement violated several FDA regulations.
We also tested weight loss formulas containing proprietary blends of stimulant ingredients, including teas, Yerba maté, and added caffeine. As claimed, several products delivered caffeine equivalent 15 cans of cola! Some also included ingredients like bitter orange and yohimbe which, as we explain in the research report on weight loss supplements, should give you pause.
You must subscribe to get the full test results for weight loss supplements along with ConsumerLab.com recommendations, comments, and quality ratings. You will get results for ten supplements selected by ConsumerLab.com and for two others that passed voluntary certification testing, as well as information about one supplement similar to one that passed testing.
In this comprehensive report, you'll discover:
- Which weight loss supplements failed testing and which passed
- Direct comparisons, reviews, and quality ratings of weight loss supplements
- The pros, cons, and weight loss evidence for bitter orange, calcium, caffeine, stimulant herbs, chitosan, chromium, diuretics, ephedra, green tea, hoodia, garcinia and HCA, L-carnitine, pyruvate, 7-keto DHEA, stimulant laxatives like senna, and vitamin C.
- Dosage of green tea, EGCG, and 7-keto DHEA for specific uses
- Concerns, cautions, and drug interactions
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