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We compare supplements by the cost to take the amount actually studied in trials — every claim linked to its source, every label checked against the NIH database, no paid placement.
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Every supplement, ranked by what works.
Popular guides.
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GAD-7 reduction of 4.5 points within 2 weeks.
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Magnesium glycinate: −17 min sleep onset (P=0.0006).
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Medical disclaimer: Educational health information based on published clinical research — not medical advice, and not a replacement for your physician. Always discuss supplement changes with your doctor, especially if you take medications or have a health condition. Methodology.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Rankings are determined by cost per effective dose and clinical evidence, not affiliate commissions. Read our methodology.