A medicine check is a simple safety habit: pause before taking a new or changed medicine and compare it with the full list of products you already use. That list should include prescriptions, over-the-counter medicines, vitamins, minerals, herbal products, and supplements. FDA consumer guidance explains that interactions can involve other drugs, foods or beverages, and medical conditions, so the safest check looks at more than one bottle.
Start with the exact label details
Write down the medicine name exactly as it appears on the label. If both a brand and generic name are listed, keep both. Add the strength, dosage form, directions, start date, and whether the medicine is taken every day or only as needed. For liquid medicines, inhalers, creams, drops, or injections, include the form because the same ingredient can be used in different ways.
Compare it with everything else you take
- Current prescriptions from every doctor or clinic.
- OTC medicines such as pain relievers, cold products, allergy medicine, sleep aids, antacids, and laxatives.
- Supplements, vitamins, minerals, herbs, powders, gummies, teas, and botanicals.
- Medicines used only sometimes, including travel, migraine, nausea, or sleep products.
- Recent medication stops, dose changes, missed doses, allergies, pregnancy status, and kidney or liver concerns to discuss.
Look for duplicate active ingredients
Duplicate ingredients are a common reason to do a medicine check. A cold medicine, sleep aid, pain reliever, and allergy product may contain overlapping active ingredients even when the front labels look different. Check the Drug Facts or prescription label, then ask a pharmacist if you are unsure whether two products belong together.
How MedSafeScan supports the check
MedSafeScan is designed to help users build a medication profile, scan labels when available, add supplements, and review selected medicines for possible interaction concerns. The app can make a medicine check easier to prepare because the important details are organized before you contact a pharmacist or doctor.
Questions to ask before you take it
- Can I take this with my current prescriptions, OTC medicines, and supplements?
- Should I avoid alcohol, grapefruit, antacids, minerals, or certain foods?
- What side effects should I watch for after starting this medicine?
- Do I need to separate this dose from another product?
- Who should I call if I notice a new symptom or miss a dose?
A medicine check should make you more prepared, not more likely to self-adjust treatment. Do not stop, skip, or combine prescribed medicines based only on an app or article. Confirm important concerns with a healthcare professional.
Quick answers
What is a medicine check?
A medicine check is a practical review of the medicines and supplements you take, including names, doses, directions, duplicate ingredients, warnings, and questions to confirm with a pharmacist or doctor.
When should I do a medicine check?
Do a medicine check when a new medicine starts, a dose changes, you add an OTC product or supplement, you leave the hospital, or your symptoms change.
Can an app complete a medicine check for me?
An app can help organize details and flag possible concerns, but a pharmacist or clinician should confirm medical decisions for your situation.
Sources and further reading
These public resources are provided for background reading. They do not replace advice from your pharmacist, doctor, or other licensed healthcare professional.
- FDA: Drug Interactions: What You Should Know
- MedlinePlus: Drug Reactions
- DailyMed: Official Drug Label Information
Last reviewed: June 27, 2026