Medscape's Drug Interaction Checker helps you build safer, more effective treatment plans by quickly identifying potential interactions between medications, supplements, and even common foods. Use this medicine and drug interaction checker to see whether your medicines, supplements, vitamins, foods, or certain health conditions may interact with each other. Display complete list of interactions for an individual item by clicking item name. Add another item to analyze for potential interactions. NOTE: This tool does not address chemical compatibility related to I.V. drug preparation or administration. The drug interactions checker will check for interactions between the drugs you enter, any possible food or disease interactions and pregnancy / breastfeeding warnings. Search 24,000+ prescription, OTC, and natural medications. Peer-reviewed, clinically sourced drug information for safer, smarter health decisions. Medications and prescription drug information for consumers and medical health professionals. Online database of the most popular drugs and their side effects, interactions, and use. A drug interaction occurs when one medication changes the way another medication works in your body. Interactions can increase a drug's side effects, reduce its effectiveness, or — in serious cases — cause life-threatening reactions. Use WebMD’s Drug Interaction Checker to identify potential interactions between medications, supplements, and foods. Reduce side effects and support safer treatment decisions. This tool explains what the interaction is and how it occurs, the level of importance and how to handle the drug interaction. It will also display any interactions between your chosen medicines, alcohol, food, beverages, or medical conditions. Check for drug interactions and learn what drug combinations to avoid with the RxList drug interaction checker tool.