Reviews and Information for Mercola

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Product Review

Probiotic Supplements Review (Including Pet Probiotics)

See What's Really in Probiotics and Our Top Picks

Product Review

Glutathione Supplements Review

Learn How Glutathione Products Differ, Which Failed, and Our Top Picks

Product Review

Joint Health Supplements Review (Glucosamine, Chondroitin, MSM, Boswellia, Collagen and Turmeric)

18% of Joint Health Supplements Failed to Pass Our Tests. See Which Passed or Failed, and Our Top Picks.

Product Review

Vision Supplements Review (with Lutein, Zeaxanthin & AREDS2 Formulas)

Find the Best Vision Supplement Based Our Tests

Product Review

B Vitamin Supplements Review (B Complexes, B6, B12, Biotin, Folate, Niacin, Riboflavin & More)

See Our Top Picks and Which 5 Failed Testing

Product Review

Astaxanthin Supplements Review

See Which Astaxanthin Products Passed or Failed CL's Tests

Product Review

Ginger Supplements, Chews & Spices Review

Tests Reveal Best and Worst Ginger Supplements & Spices. Poor Quality and Lead Contamination Discovered in Some Products.

Product Review

Fruits, Veggies, and Other Greens Supplements Review (Including Spirulina and Chlorella)

Avoid Lead in Greens, Problems with Pills, and Don't Give Up Eating Whole Foods.

Product Review

Zinc Supplements, Lozenges, and Melts Review

Find the Best Zinc Supplements, Including Lozenges for Colds.

Product Review

Vitamin C Supplements Review

Find the Best Vitamin C Supplements