Before we list a product, we look at its label and its manufacturer, not just its marketing. Here is what we look for, and what we don't claim. We don't run our own laboratory, and we don't test products ourselves; we rely on what manufacturers disclose and on independent programs where a label states them.
What we look for
- A complete, readable Supplement Facts panel. Serving size, amount per serving and % Daily Value for each nutrient, as FDA labeling rules require.
- Disclosed forms and amounts. The form of each nutrient stated, such as magnesium glycinate rather than just "magnesium," and amounts listed for each ingredient wherever possible. When a proprietary blend shows only a total weight, we note it.
- Clear other ingredients and allergen information. A full list of other ingredients, such as capsule material, sweeteners and colors, and an allergen statement where one applies.
- Manufacturer contact details. The name and place of business of the manufacturer or distributor, and a U.S. address or phone number for reporting problems, which supplement labels must include.
- Made under cGMP. Brands that state they follow the FDA's current good manufacturing practice rules for dietary supplements (21 CFR Part 111).
- Independent seals, at the product level. Where a product label or its manufacturer states a program such as USP Verified, NSF Certified for Sport or Informed Choice, we show it for that product only. Our guide What USP, NSF and other seals really mean explains what they mean.
- Dates and seals. A lot number and a best-by or expiration date, and tamper-evident packaging.
- Sensible storage directions. Clear instructions for products that need cool, dry storage or refrigeration.
- Claims that stay within the rules. Structure/function statements with the required FDA disclaimer, and no disease claims.
What we don't do
- We don't claim FDA approval for supplements. The FDA doesn't approve dietary supplements for safety or effectiveness before they're sold; manufacturers are responsible for making safe products with truthful labels.
- We don't invent test results, statistics, reviews or expert endorsements.
- We don't use words like "organic," "vegan," "non-GMO" or "gluten-free" for a product unless its label or manufacturer states it.
- We sell dietary supplements and natural personal care items. We don't sell prescription or over-the-counter medicines, and we don't sell CBD, hemp extract or THC products.
If something isn't right
If a product arrives damaged, with a broken seal, or past its date, it is covered: Damaged, defective, incorrect or expired items are always covered: email us your order number, clear photos, and the lot number and expiration date from the label, and we'll make it right. Please report visible delivery damage within 7 days. If you have a reaction to a product, stop using it, contact your doctor, and let us know; our Supplement safety page explains how to report it to the FDA.
Learn more in How to read a supplement label and our Vitamin & Supplement Glossary, browse Shop by need, or start with Vitamins, Minerals and Omega-3 & Fish Oil.