Drug-Food Interactions Checker
Type a medication name to see which foods, drinks, and supplements can change how it works. Covers 30+ common prescriptions. Free, no sign-up.
Interaction checker
Type a medication name and tap Check food interactions.
The most common drug-food interactions to know
- 🍇 Grapefruit + statins / blood pressure / immunosuppressants: Grapefruit inhibits the CYP3A4 liver enzyme that breaks down dozens of medications. Result: blood levels spike and side-effect risk soars.
- 🥬 Vitamin K (leafy greens) + warfarin: Vitamin K is what warfarin works against. Sudden changes in intake can dangerously alter your INR.
- 🍷 Alcohol + many drugs: Worsens drowsiness with sedatives, increases bleeding with NSAIDs, raises liver toxicity with acetaminophen, and is dangerous with certain antibiotics (metronidazole).
- 🥛 Dairy + certain antibiotics (tetracyclines, fluoroquinolones): Calcium binds the drug in the gut and stops it from absorbing.
- 🧀 Tyramine-rich foods + MAOI antidepressants: Aged cheese, cured meats, fermented foods can trigger a hypertensive crisis.
- ☕ Caffeine + thyroid medication / theophylline: Affects absorption (levothyroxine) or amplifies stimulant effects.
What's included
30+ commonly prescribed medications across cardiovascular drugs (warfarin, statins, ACE inhibitors), antibiotics (tetracyclines, fluoroquinolones, metronidazole), GI drugs, mental health drugs (SSRIs, MAOIs, benzodiazepines), and pain medications. Each entry shows the food/drink, the mechanism, and what to do.
Severity legend
- Major — avoid the combination or only take under medical supervision
- Moderate — limit or time carefully; discuss with your pharmacist
- Minor — generally fine in normal amounts; be aware
Important notes
- Interactions listed are the most clinically significant and well-documented. There may be others specific to your situation.
- This tool covers food and beverage interactions only — for drug-drug interactions, use our main interaction checker or the iOS app.
- This is an educational tool, not medical advice. Always consult your pharmacist or prescriber before changing your diet around a prescription.
- See our Terms of Use for full disclaimers.
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