Supplement guides
Supplement guides, page 3
Plain-English guides on labels, doses, real prices, free trials and refunds. Written to help you check a product, not to sell you one.
What the percent Daily Value on a supplement label really tells you
What %DV means, how to check the math yourself, why 1,000% is not a bonus, and how ingredients with no Daily Value are shown.
Red flagsDetox and cleanse supplement claims: what to check first
What NIH, FDA and FTC sources say about detox and cleanse claims, the red flags on sales pages, and a checklist to run before you order.
RegulationDietary supplement vs drug: how FDA regulation differs
A plain comparison of how the FDA treats drugs and dietary supplements: approval, claims, labels, manufacturing rules and safety reports.
SafetyErectile dysfunction supplements and hidden drug warnings
What the FDA has found in sexual enhancement products, why hidden sildenafil and tadalafil are risky, and how to spot warning signs before you buy.
Red flagsFake celebrity endorsements in supplement ads: how to verify one
How to verify a celebrity supplement endorsement in minutes, what the FTC Endorsement Guides require, and how logos and name-drops imply more than they say.
Red flagsFake countdown timers and limited-stock banners on supplement pages
How to spot countdown timers and limited-stock banners that are not tied to a real deadline, with examples from our reviews and a simple test.
RegulationFDA tainted products database: how to search it before you buy
Search the FDA Health Fraud Product Database by name, drug and website, read the columns, and learn what to do if a product is listed.
RegulationFDA warning letters: how to check a supplement brand
How to search the FDA warning letters table, read each column, and what a match or a clean result does and does not tell you.
RegulationFTC rules on health claims and testimonials in supplement ads
How the FTC judges supplement health claims, testimonials, expert endorsers and affiliate disclosures, plus a checklist for reading sales pages.
EvidenceGarcinia cambogia and HCA: what the studies found
What the JAMA trial and pooled reviews found on garcinia cambogia and HCA, the doses used, NIH safety notes, and how to read a weight-loss label.
Guides are general information, not medical advice. Read how we review and our medical disclaimer.