Discover a quick, practical guide to verify supplement purity and safety. Learn essential checks, third-party testing, and how to spot red flags before you buy. This page focuses on how to check supplements, with a straightforward approach you can apply to most products. By following this guide, you’ll have a clearer sense of what’s on the label and what to expect from the packaging. Start with the basics of labeling and packaging. A reliable product should present a complete label that includes the product name, serving size, and a full ingredient list with amounts per serving. Look for a batch or lot number and an expiration date, plus clear manufacturer or distributor contact information. Check for allergen statements, country of origin, and any claims that are not supported by the label. If information is missing or appears inconsistent, that’s a red flag. Third-party testing is a strong sign of verification. See if the product carries a recognized certification mark such as USP Verified, NSF Certified, or another reputable third-party program. A certificate of analysis (COA) from an independent lab, ideally tied to the product’s specific batch, is a helpful document—look for the COA on the brand’s site or request it from customer support. When available, compare the COA’s test results for potency and purity with the product’s stated ingredients and lot number. Finally, spot red flags before you buy. Be cautious of products with vague sourcing, inconsistent labeling, or missing COAs. Beware of sensational or unrealistic claims and prices that seem too good to be true. Check the brand’s online presence: is the company transparent about manufacturing practices and compliance? If any details don’t align—such as a COA that doesn’t match the lot or a lack of contact information—consider looking for another option.
