Is Your Supplement Any Good?
Most supplements have one of three problems: wrong form (magnesium oxide instead of glycinate), wrong dose (too little to match clinical evidence), or wrong price (10x more than equivalent products). Enter what you take below and we'll check all three.
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Common Problems We Find
| Supplement | Common Problem | What to Use Instead | Guide |
|---|---|---|---|
| Magnesium | Oxide form (~4% absorbed) | Glycinate (~80% absorbed) | Forms guide |
| Vitamin D | D2 instead of D3; 400 IU dose | D3 at 1,000-5,000 IU | D2 vs D3 |
| Fish Oil | Ethyl ester form; "1200mg" label hiding 360mg EPA+DHA | Triglyceride form; check actual EPA+DHA | TG vs EE |
| Creatine | HCl or buffered form (5-10x overpriced) | Plain monohydrate ($0.05/day) | Forms guide |
| Multivitamin | Folic acid + cyanocobalamin (synthetic B vitamins) | Methylfolate + methylcobalamin | Quality guide |
Frequently Asked Questions
How do I know if my supplement is good quality?
Check three things: form (glycinate > oxide for magnesium, D3 > D2 for vitamin D, triglyceride > ethyl ester for fish oil), dose (compare to clinical trial amounts), and third-party testing (USP or NSF). Our tool checks all three.
Am I overpaying for my supplement?
Probably. The key metric is cost per clinically-effective daily dose, not cost per bottle. A cheap bottle requiring 6 pills/day costs more than an expensive bottle requiring 2. Enter your product above to find out.