Drug Interaction Checker

Add two or more medicines and see documented interaction pairs — a prompt to double-check, not a decision.

Why we built this

Nesayo is billing and inventory software for Indian retail pharmacies. Inside the product, the same interaction-checking logic runs automatically at billing time as a nudge to the pharmacist — never a block, never a clinical decision made for them. This free tool exposes the identical reference list to anyone, no signup, so a pharmacist (or a curious patient) can check a pair before it reaches the counter.

Frequently asked questions

Does this tell me if it's safe to take two medicines together?

No. It flags pairs with a documented interaction so you know to double-check with a pharmacist or doctor. It doesn't decide safety for a specific patient — that needs someone who knows their full history.

What does it mean if no interaction is found?

It means this pair isn't in the reference list of documented interactions checked here — not that no interaction of any kind exists anywhere. The list is not exhaustive. Use professional judgement alongside this tool, never instead of it.

Is this a medical device or a clinical decision-making tool?

No. It is a free reference tool, not a medical device, and it does not make treatment decisions for you. It is not a substitute for consulting a registered pharmacist or physician.

This page is informational only. It is not a medical device, and it does not make any decision for you. Always consult a registered pharmacist or physician before making any decision about medicines. In an emergency, contact a doctor or hospital immediately.

Nesayo flags interactions at billing time too

The same check runs as a background nudge inside Nesayo's billing flow — free forever, no signup for basic billing.

See the live demo →