About DrugCheck

DrugCheck is a free, publicly accessible drug interaction checker powered by Health Canada's Drug Product Database (DPD) and official FDA data. Our mission is simple: make drug safety information easy to find for everyone — patients, caregivers, students, and healthcare professionals alike.

No login required. No subscription. No ads tracking you. Just fast, reliable drug information.

Try DrugCheck Free →

By the Numbers

350+

Drugs searchable

2,001

FDA interaction records

🍁

Bilingual (EN & FR)

18

Vitamins & supplements

63

Medical conditions

What You Can Check

💊 Single Drug

Look up any drug by generic or brand name. See interactions, side effects, dosage, pregnancy safety, and food warnings — all from FDA labels.

⚡ Drug vs Drug

Check two drugs together. Our system searches FDA records to find documented interactions between any two medications.

🍊 Food vs Drug

Check how grapefruit, alcohol, dairy, caffeine, vitamin K, tyramine, and high-potassium foods interact with your medications.

🌿 Vitamins & Supplements

Browse 50+ vitamins & supplements and supplements — Vitamin D, B12, Iron, Zinc, Omega-3, CoQ10, and more — with timing tips and drug interaction warnings.

🌿 Vitamin vs Drug

Combine any vitamin or supplement with a specific drug to see potential interactions and alcohol warnings.

🚫 Allergy Check

Check drug allergies and cross-reactivity. Know which drugs to avoid if you're allergic to penicillin, sulfa drugs, NSAIDs, and more.

🩺 My Condition

Get condition-specific drug guidance for 100+ conditions including hypertension, diabetes, depression, COPD, chronic pain, and more.

💊 My Medications

Add multiple drugs to your personal list and check all pairwise interactions at once — ideal for patients on multiple medications.

🤰 Pregnancy Safety

Check whether a medication is safe during pregnancy — covering pain relief, antibiotics, mental health drugs, blood pressure medications, and more.

How It Works

DrugCheck draws from two official data sources:

Health Canada Drug Product Database (DPD) — Canada's official registry of approved drug products. DPD data is available in both English and French, powering the bilingual search experience on DrugCheck.
openFDA API — the U.S. Food and Drug Administration's open data platform. Drug interactions, side effects, dosage, and pregnancy warnings come directly from official FDA drug labels submitted by pharmaceutical manufacturers.

When you search, our system queries an Elasticsearch database indexed with both DPD and FDA data and returns the most relevant results. You can search by generic name (e.g. ibuprofen) or brand name (e.g. Advil). The app runs on AWS EC2 for fast, reliable performance.

Who Built This

Lilibeth Tolentino built DrugCheck as a school project for a Big Data Infrastructure course — and kept going. What started as a course assignment became a live, publicly accessible health tool used by people across Canada and beyond.

The goal was always the same: make drug safety information easy to find for everyone — patients, caregivers, and families managing multiple medications — without requiring a login, a subscription, or any technical knowledge.

DrugCheck is designed with responsible AI in mind: it only answers from official Health Canada and FDA records, refuses to invent information when no data is found, and flags dangerous combinations clearly. It knows its limits — and says so.

The site is available in English and French — use the EN/FR toggle in the navigation bar to switch languages.

Have feedback or suggestions? Email: lilibeth.tolentino@gmail.com

⚠️ Medical Disclaimer

DrugCheck is for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor or pharmacist before making any decisions about your medications. Never stop or change a medication without medical guidance.