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CLA Supplements Reviewed by

Make sure you're choosing the best Conjugated Linoleic Acid (CLA) supplements approved in our tests!

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Alphabetical list of CLA supplement brands compared in this review

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Finest Nutrition CLA

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GNC Pro Performance CLA

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GNC Total Lean CLA

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Iron-Tek Essential CLA

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MRM CLA 1250

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MusclePharm CLA Core

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Nature's Sunshine CLA

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Ortho Molecular CLA

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Primaforce Max CLA

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The Vitamin Shoppe Weight Management Tonalin CLA

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Vitacost Tonalin XS-CLA

Conjugated linoleic acid (CLA) supplements may help with slimming by increasing the ratio of muscle to fat. However, not every brand of CLA supplement delivers the amount of CLA you expect from the label. In fact, in our most recent tests, only 38.5% of the listed CLA ingredient in one product was actual CLA. Another product provided only 85.8% of the listed CLA.

CLA is an expensive ingredient, so you don't want to be shortchanged. You also don't want to spend more than you need to, and we identified one top-quality CLA supplement that cost just one-third as much as some other high-quality products. If you are going to use CLA, you may as well use the best CLA at the best price.

You must join to get the full test results for CLA supplements along with's recommendations. You will get quality ratings for eight CLA supplements selected by and for three others that passed our voluntary, quality certification testing.  

In this comprehensive review of CLA supplements, you'll discover:
  • Which CLA supplements passed testing and which failed -- and why
  • Direct comparisons and quality ratings of CLA supplements 
  • What to look for on labels to help you get the amount of CLA you expect
  • How forms of CLA differ, and how CLA in supplements (such as Tonalin and Clarinol brands of CLA) differ from CLA in foods 
  • Dosage used for slimming
  • Concerns and cautions with CLA supplements, and who should be particularly careful with them

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Additional Information
Tested through CL's Quality Certification Program prior to, or after initial posting of this Product Review.