Interaction Checker

Understand the pairings in your stack.

Choose two or more ingredients to explore documented synergies and cautions. 92 relationships from our reviewed profiles, with the original notes and their context.

How it works

  1. PickChoose two or more of the ingredients we've documented pairings for.
  2. CheckSee each documented synergy or caution, quoted from our reviewed profiles.
  3. ConfirmTake the full list to a pharmacist or clinician before combining anything.

Not a safety clearance

Educational content, not medical advice, and not a safety clearance. This checker surfaces only the stacking notes we've already published on each ingredient's profile. It does not cover prescription medication, and a pair it doesn't list has not been cleared as safe. Talk to a pharmacist or clinician before combining anything. Grades and notes follow The Evidence Standard.

Pick two or more of the 50 ingredients we've documented pairings for.

Auditing a whole routine instead of a pair? The Stack Audit grades everything you take at once. To browse and compare the library, use the Evidence Explorer.