No major interaction found
SafeAvailable data does not show a significant concern between these items at typical doses.
Type two items below and get instant severity ratings in plain English — prescriptions, OTC meds, vitamins, grapefruit, and alcohol.
Educational guidance only. Always confirm with a doctor or pharmacist.
Sample result — traffic-light severity
Available data does not show a significant concern between these items at typical doses.
A moderate concern may need timing adjustments or closer monitoring with your care team.
This combination has well-documented risks. Confirm with a doctor or pharmacist before use.
Educational only — not medical advice. Real checks use FDA & NIH data.
Learn more on our drug interaction checker guide.
Coffee, calcium, and iron can affect levothyroxine absorption.
DrugPair prioritizes clarity, action, and mobile speed for patients and caregivers.
No database dump. Each interaction explains what happens and why it matters.
Green, yellow, amber, and red states make risk easy to understand quickly.
Grapefruit, alcohol, vitamins, and supplements belong in the same review.
Logged-in users can keep recent checks for appointments and care teams.
Pro users can export clean summaries to bring to a pharmacist or doctor.
The tool is chip-based, responsive, and built for large touch targets.
Long-tail answers for US patients — each links to our free drug interaction checker.
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