Drug Interaction Checker

This tool can help you determine if the drugs you are taking have any adverse interactions with one another, with over-the-counter drugs, or with your favorite herbs and vitamins.

Search for a Medication or Supplement

Our comprehensive drug reference answers your questions on 3,300 prescription medications, over-the-counter products, and dietary supplements.

A-Z Find an Herb, Vitamin, or Supplement

Discover medically validated uses for vitamins, minerals, amino acids, and other substances used as nutritional supplements.