Verified Supplement Data

About Verified Supplement Data

Verified Supplement Data is a comparison and reference site for dietary supplements, ranking products by cost per clinical dose rather than cost per bottle or serving. Listings are organized by supplement category (e.g., magnesium, vitamin D, iron, omega-3, ashwagandha, creatine) and by form (such as glycinate vs. citrate vs. oxide for magnesium), with each product's dose, price, cost per day, and third-party certification status (USP, NSF Certified for Sport, or none) shown side by side. Claims are linked to sources such as PubMed and graded by evidence strength (strong, moderate, limited), and product labels are checked against the NIH Dietary Supplement Label Database (DSLD).

The site also includes guides on supplement dosing and selection (e.g., vitamin D dosage, magnesium for sleep, medication-nutrient depletion), a searchable lookup tool for supplement labels, and pages on topics like supplement recalls and banned ingredients. It carries a medical disclaimer stating the content is educational and not a substitute for professional medical advice, and discloses that it earns commissions as an Amazon Associate on qualifying purchases while stating that rankings are based on cost per effective dose and clinical evidence rather than affiliate revenue.

The product is aimed at consumers researching which supplement brand, form, or dose to buy, as well as anyone comparing supplements by price relative to the amount used in clinical studies.

Key features

• Ranks supplements by cost per clinical dose rather than price per bottle
• Grades evidence strength (strong, moderate, limited) for each claim with a linked source
• Checks product labels against the NIH DSLD database
• Free supplement lookup tool searching 200,000+ verified labels
• Medication depletion tool showing which nutrients specific medications deplete
• Compares specific product forms (e.g., magnesium glycinate vs citrate vs oxide) with named brands and prices

Frequently asked questions