Is this medical advice?
No. What-Supp gives general supplement research information. It does not diagnose, prescribe or replace advice from a GP, pharmacist or dietitian.
Public beta · Evidence reviewed September 2026
Confused by supplements?
Start with your goal, not the loudest label.
Take a 3–4 minute adaptive assessment. Get the foundations worth fixing, supplements that fit the evidence, options to skip, and the situations that need professional advice. No login or brand ranking.
Choose your goalHow it works
A decision tool, not a shopping list.
The tool checks foundations and safety before evidence and preferences. It can recommend nothing, and it separates strong evidence from promising or limited options.
What do you want help with first?
Before you start
Does this sell me a supplement?
No. There are no ranked brands or retailer links. The result explains how to judge a product only after an ingredient earns a place.
What will I discover?
You’ll get foundations to fix, zero to three supported options, broader discovery choices, skip reasons and professional-first flags.
What does it ask?
Concrete questions about training, food, sleep, caffeine, current supplements and safety. Only relevant goal questions are shown.
