Supplement Decision Tools
Free calculators and selectors for supplement decisions that are easy to overthink: price per useful dose, magnesium form fit, interaction cautions, protein value, creatine dose, and evidence grade.
Start here
Use these tools before comparing products. They do not replace medical advice, but they make the practical decision math visible before a label, ad, or Reddit thread pushes you too fast.
Tools
- Price per effective dose calculator Compare products by active amount and useful comparison dose, not bottle price alone.
- Magnesium form selector Route magnesium glycinate, citrate, oxide, and gentler options by goal and tolerance.
- Supplement interaction checklist Flag common medication, surgery, pregnancy, organ-health, and stacking cautions.
- Protein powder cost per gram calculator Turn protein or collagen labels into cost per serving, gram, and 25 g equivalent.
- Creatine dose calculator Estimate conservative maintenance and optional loading ranges without treating more as better.
- Evidence grade glossary Translate meta-analysis, RCT, observational, animal/in-vitro, and brand-claim language.
How to use the tools safely
- One tool is not a verdict. Use calculators to reveal tradeoffs, then read the supplement guide and product analysis.
- Safety beats savings. A cheaper effective dose is not better if the form, dose, or interaction profile is wrong for you.
- Evidence stays separate. Quality testing supports label trust; it does not prove a health outcome.
Source and evidence mapPage purpose, source types, and evidence boundaries
Page purpose: Supplement Decision Tools is an evidence-aware decision tools decision guide. Supplement Decision ToolsFree calculators and selectors for supplement decisions that are easy to overthink: price per useful dose, magnesium form fit, interaction cautions, protein value, creatine dose, and evidence grade. Start hereUse these tools before comparing products....
Sources are used for grounding and verification context. A source can support label accuracy, regulatory context, or evidence type without proving that a specific supplement is right for every reader.