Plain-English answers about medication safety, drug interactions, and how MedSafe works.
What is a drug interaction?
A drug interaction is when two or more medications affect each other. One drug may make another work less effectively, cause unexpected side effects, or increase the risk of harm. Interactions can also happen with food, drinks, and supplements.
Is MedSafe safe to use for medical decisions?
MedSafe is for informational purposes only. It helps you identify potential issues, but you should ALWAYS consult your doctor or pharmacist before making any changes to your medication. Never stop a medication without medical advice.
Can supplements interact with my medications?
Yes! Many supplements can interact with medications. St. John's Wort can reduce the effectiveness of birth control and antidepressants. Fish oil increases bleeding risk with blood thinners. Vitamin K reduces warfarin effectiveness. Always tell your doctor about all supplements.
How accurate is MedSafe's data?
MedSafe uses data directly from the FDA's OpenFDA API and the NIH's RxNorm API — the same databases used by hospitals and pharmacies. However, no tool is 100% complete. Always verify with a licensed pharmacist.
What foods interact with medications?
Grapefruit interacts with 85+ drugs. Alcohol interacts with 150+ medications. Dairy reduces absorption of some antibiotics. Vitamin K-rich foods (spinach, kale) reduce effectiveness of blood thinners like Warfarin. Always check the food warnings section.
How many medications can I check at once?
MedSafe allows you to check up to 10 medications at the same time. This is useful for people on complex medication regimens — for example, elderly patients often take 6-8 medications daily.
What does the color coding mean?
Red = High Risk / Dangerous interaction — talk to your doctor IMMEDIATELY. Yellow = Moderate interaction — monitor closely, discuss with your pharmacist. Green = Low risk — no major known interaction, but always be cautious.
Can I check generic and brand name drugs?
Yes. MedSafe recognizes both generic names (metformin) and brand names (Glucophage). The autocomplete search will help you find the right medication.
What is the RxNorm API?
RxNorm is a standardized nomenclature for medications maintained by the U.S. National Library of Medicine (NIH). It provides a consistent way to identify drugs and check interactions across different systems.
Should I stop my medication if MedSafe shows an interaction?
NEVER stop a medication without consulting your doctor first. MedSafe shows potential interactions so you can have an informed conversation with your healthcare provider — not to make decisions on your own.