Interactions Checker
Check two or more substances for known interactions.
Drug interactions can be fatal. Absence of a known interaction does not mean a combination is safe. Unknown combinations should be treated as potentially dangerous.
The checker isn't open yet
coming soonYou'll be able to select two or more substances and read every recorded interaction between them, graded by severity, with the mechanism and the evidence behind each grade.
in the meantime
- Substance index Every substance page lists its recorded interactions, each with its severity.
- Drug interactions The severity ladder from lethal to low risk, and the mechanisms behind the dangerous combinations.
- Contraindications checker Medical conditions and medications that change a substance's risk.