Product Reviews
Weight Loss Supplements Review (7-Keto DHEA, Forskolin and Stimulant Blend Supplements)

Reviewed and edited by Tod Cooperman, M.D. Tod Cooperman, M.D.
Initial Posting: 5/24/19

Choose the Best Weight Loss Supplement

Be Careful With Weight Loss Supplements — Few Pass Quality Testing and Safety Review

Weight Loss Supplements Tested by
Alphabetical list of 7-keto DHEA, forskolin, and herbal stimulant weight loss supplement brands compared in this review
BioGanix Pure Forskolin Extract Muscletech Hydroxycut Hardcore Elite Puritan's Pride 7-Keto DHEA 25 mg
Burn XT Nature's Answer Forskohlii Weight Control Rock Star Skinny Gal Thermogenic
Douglas Laboratories 7-Keto Natures Plus Herbal Actives Coleus Forskohlii Source Naturals 7-Keto
Herbalife Total Control Paradise Coleus Forskolii Xenadrine Ultimate Weight Loss
Life Extension 7-Keto DHEA Metabolite 100 mg Premier Research Labs Lean Advantage  
BioGanix Pure Forskolin Extract Burn XT Douglas Laboratories 7-Keto Herbalife Total Control Life Extension 7-Keto DHEA Metabolite 100 mg Muscletech Hydroxycut Hardcore Elite Nature's Answer Forskohlii Weight Control Natures Plus Herbal Actives Coleus Forskohlii Paradise Coleus Forskolii Premier Research Labs Lean Advantage Puritan's Pride 7-Keto DHEA 25 mg Rock Star Skinny Gal Thermogenic Source Naturals 7-Keto Xenadrine Ultimate Weight Loss
Make sure the weight loss supplement you take passed our test and is right for you!
Isn't your health worth it?
In this Review, CL tested stimulant blends (which are some of the most popular weight loss supplements and contain caffeine and/or synephrine), as well as supplements with 7-keto DHEA or forskolin (from Coleus forskohlii). CL has separately reviewed many other types of supplements used for weight loss (See our reports on other supplements used for weight loss: Chromium, Garcinia cambogia, Green Coffee Bean, and Green Tea, as well as information about Raspberry Ketone). There isn't overwhelming evidence that any dietary supplement enables significant, long-term weight loss. However, many small studies — typically funded by supplement companies -- suggest short-term weight loss, slimming (reducing fat but not overall weight), and/or appetite reduction (see What It Does for a summary of the evidence).

What did we find? Laboratory tests and analyses by ConsumerLab revealed potentially dangerous amounts of caffeine in three products and a potentially dangerous amount of synephrine in another — twice the amount expected from its label. In addition, one Forskohlii supplement contained less than 5% of its expected forskolin. All of the 7-keto DHEA supplements contained their claimed amounts. Across products, the dose of caffeine ranged from 51.6 mg to 270 mg per serving in stimulant blends, 7-keto DHEA ranged from 25 mg to 100 mg, and forskolin ranged from just 1.9 mg to 50 mg. The cost to obtain 100 mg of 7-keto DHEA ranged from 15 cents to $3.00 and the cost for 25 mg of forskolin ranged from 33 cents to $1.40 -- showing huge opportunity for savings when buying these products. For details, see What CL Found.

Among products Approved in testing, ConsumerLab selected a Top Pick for 7-Keto DHEA and a Top Pick for Forskolin, with each providing the clinically tested dosage at relatively low cost. A Top Pick Stimulant Blend was also chosen that provided a safe level of caffeine.

You must be a member to get the full test results for weight loss supplements along with recommendations, comments, and quality ratings. You will get results for thirteen supplements selected by for testing and for one other that passed voluntary Quality Certification Testing.

In this comprehensive review, you'll discover:
    • Which weight loss supplements failed testing and which passed
    • ConsumerLab's Top Picks among products
    • Direct comparisons, reviews, and quality ratings of weight loss supplements 
    • The pros, cons, and weight loss evidence for bitter orange, calcium, caffeine, Garcinia cambogia, stimulant herbs, chitosan, chromium, diuretics, ephedra, forskolin, green tea, hoodia, L-carnitine, pyruvate, raspberry ketone, 7-keto DHEA, stimulant laxatives like senna, and vitamin C  
    • Dosage for 7-keto DHEA and forskolin
    • Concerns, cautions, and drug interactions for caffeine and many ingredients common in weight loss supplements  

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Learn More About Weight Loss Supplements Answers -- for Weight Loss Supplements Review (7-Keto DHEA, Forskolin and Stimulant Blend Supplements)
Can raspberry ketone help me lose weight? Get the answer >>

Will 7-keto DHEA help me lose weight? Get the answer >>

What is Skinny Fiber and does it really work? I see that glucomannan is a key ingredient. What is that? Get the answer >>

Can white kidney bean extract really help me lose weight? Get the answer >>

I want to try yacon syrup because I've heard it is helpful for weight loss, but there are so many brands to choose from. How do I find a quality brand? Get the answer >>

I have been having dizziness for the past few months and am wondering if it could be a side effect of supplements I take. Which supplements cause dizziness? Get the answer >>

Can supplements help me lose weight? Get the answer >>

Does forskolin help for weight loss? Is it safe? Get the answer >>

Which supplements can cause diarrhea? Get the answer >>
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