Supplement guides
Supplement guides, page 2
Plain-English guides on labels, doses, real prices, free trials and refunds. Written to help you check a product, not to sell you one.
Blood pressure supplements: what the claims really mean
What NHLBI, NCCIH and published trials say about garlic, hibiscus and heart-health formulas, and the label red flags to check first.
EvidenceBoron supplements for men's health: what the evidence says
Boron is sold for testosterone and men's health, but the trials are tiny and mixed. See what they found and how to check a label.
SafetyCaffeine in weight loss and energy supplements: where it hides
Guarana, green tea extract and yerba mate carry caffeine, and labels often skip the number. How to spot hidden sources and total your day against 400 mg.
EvidenceCholesterol supplements: what the studies show and what labels claim
What NCCIH, MedlinePlus and a meta-analysis say about plant sterols, garlic and red yeast rice, and how to read a cholesterol supplement label.
EvidenceChromium for blood sugar: what trials found and what labels claim
What meta-analyses of chromium found, how label doses of 0.7 mcg to 1 mg compare with trial doses, and what to check before you buy.
DosesCinnamon supplements for blood sugar: cassia vs Ceylon and label doses
Cassia vs Ceylon, what coumarin means, doses used in cinnamon studies and how real supplement labels compare.
EvidenceCirculation and varicose vein supplements: what the claims leave out
What Cochrane reviews say about horse chestnut and diosmin for leg veins, and how to judge a circulation supplement's sales page.
EvidenceCollagen supplements: what the research says about skin and joints
What meta-analyses say about collagen for skin and joints, where the studies are weak, and how to check a label before you buy.
IngredientsCoQ10 supplements: ubiquinol vs ubiquinone, doses and statin questions
Ubiquinone versus ubiquinol, dose ranges on labels and in studies, and the conflicting statin trials, explained plainly.
DosesCreatine dose: what to check on a supplement label
What research used for creatine doses, why loading is optional, and how to spot hidden amounts on a fitness supplement label.
Guides are general information, not medical advice. Read how we review and our medical disclaimer.