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.
Guides on this page
Does serrapeptase work as a supplement? What the research says
What systematic reviews say about serrapeptase, why enteric coating and SPU units matter, and how enzyme supplements print their amounts.
IngredientsWhat does a moringa supplement label really give you?
The 2,400 mg trial dose, how to do the capsule math, and how four moringa products in our reviews print their amounts.
SafetyWhat to check on a shilajit supplement before you buy
Lab studies found lead, arsenic and mercury in some shilajit samples. Here is what to check on the label, the lab report and the trial doses.
EvidenceTongkat ali supplements: what trials used versus what labels list
Tongkat ali trials used standardized extracts near 200 mg a day. Labels in our reviews range from 33 mg to no amount at all.
EvidenceDoes maca improve libido or energy? What trials and labels show
Maca trials used 1.5 to 3 g a day, with limited evidence for libido and mixed results for energy. Labels in our reviews often list far less.
EvidencePanax ginseng supplement: what studies show and which doses they used
What NIH and Cochrane reviews say about Panax ginseng, which doses trials used, and what to ask a pharmacist before buying.
EvidenceSaffron extract supplement: what studies show for mood and memory
What trials found for saffron extract and mood or memory, the 30 mg a day dose, safety data and how to check a label.
EvidencePhosphatidylserine supplement: memory evidence and the doses studied
What phosphatidylserine trials found for memory, what the FDA said, soy versus bovine sources and the 4% complex label trap.
SafetyIs huperzine A safe in memory supplements? What the label doses mean
What reviews and trials say about huperzine A, the doses researchers used, and how memory-supplement labels compare.
SafetyWhy is St. John's wort in some supplements a drug interaction risk?
How St. John's wort interacts with common medicines, why it appears in hearing and memory capsules, and how to spot it on a label.
Guides are general information, not medical advice. Read how we review and our medical disclaimer.