Medicine Guide

Drug interactions

499 medicines whose official FDA labelling documents interactions with other medicines, food or alcohol. Pick one to read what the label actually says.

This is a reference, not a checker.It shows you what a manufacturer's approved label records about interactions for one medicine. It cannot tell you whether a specific combination is safe for you, and — this part matters — an interaction not being listed does not mean a combination is safe. Only a pharmacist or doctor looking at your complete medicine list, including anything you buy over the counter, can make that call.

Why we built it this way

Until recently the U.S. National Library of Medicine ran a public drug-interaction API that let sites check two medicines against each other. That service has been retired, and we are not willing to substitute a commercial dataset we cannot show you the provenance of.

So instead of a pairwise checker that quietly guesses, we show you the primary source: the interactions section of the FDA-approved label, quoted and attributed. It is less flashy and considerably more honest.

Getting the most out of a pharmacist

  • Bring an actual list — or the boxes — rather than trying to remember names.
  • Include things people forget: the pill you take “occasionally”, herbal remedies, supplements, and anything prescribed by a different doctor.
  • Mention alcohol honestly. Several very common medicines interact with it.
  • Ask specifically: “does anything here interact with anything else?” It is a question pharmacists are trained for and glad to be asked.

Medicines with documented interactions

A

40

B

15

C

57

D

44

E

25

F

24

G

9

H

11

I

20

K

3

L

31

M

45

N

19

O

13

P

37

Q

2

R

20

S

31

T

34

U

1

V

11

W

1

Z

6

Interaction text is reproduced in summary from openFDA, the U.S. Food and Drug Administration's open data service for approved product labelling. Labelling is US-specific and may differ from the product available in your country.