All Supplements
Every supplement below has been rated using pooled data from randomized controlled trials. You’ll see what works, what doesn’t, and exactly how strong the evidence is.
Each page breaks down specific health claims with effect sizes, study counts, and a plain-English verdict. No hype. Just data.
Ashwagandha
✓ WorksStrong evidence for anxiety and cortisol reduction. Moderate for strength. Weak for testosterone despite marketing …
Collagen
? MaybeJoint pain evidence is solid. Skin benefits look good until you remove industry-funded studies. Gut health claims have …
Collagen
? MaybeJoint pain evidence is solid. Skin benefits look good until you remove industry-funded studies. Gut health claims have …
Creatine
✓ WorksStrong evidence for strength and muscle mass from massive meta-analyses. Emerging evidence for cognition, especially in …
Curcumin
✓ WorksStrong evidence for lowering inflammation markers and relieving joint pain. Comparable to NSAIDs for osteoarthritis with …
Magnesium
? MaybeStrong evidence for small blood pressure reductions. Modest evidence for sleep. Suggestive for anxiety. Doesn't prevent …
Melatonin
✓ WorksStrong evidence for faster sleep onset and jet lag prevention. Modest evidence for sleep quality. Low doses (0.5-3mg) …
Omega-3 / Fish Oil
✓ WorksStrong evidence for reducing heart disease risk, triglycerides, and inflammation. Moderate evidence for depression, but …
Probiotics
✓ WorksStrong evidence for IBS symptoms across 72+ RCTs. Cochrane-backed data for fewer respiratory infections. Promising mood …
Vitamin D
? MaybeGood evidence for immune function. Mixed results for bones, depression, and muscle. Benefits mostly show up in people …
Zinc
✓ WorksStrong evidence for immune function and shortening colds. Moderate evidence for acne, especially topical. No real …