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FAQ: Drug Information

Question: Where can I find information about drugs, including formulations and interactions?

Answer: We can only direct you to drug information resources. We encourage you to ask your doctor or pharmacist for drug information.

US Drug Information

The Drug Information Portal is a gateway to current drug information from the National Library of Medicine® (NLM) and other key government agencies.

More NLM tools to find drug information:

  • MedlinePlus® Drugs, Supplements, and Herbal Information provides information about prescription drugs, over-the-counter medicines, dietary supplements, and herbal remedies. Includes side effects, dosage, special precautions, and more.
  • DailyMed® provides information about prescription drugs as found in medication package inserts.
  • MEDLINE/PubMed or TOXLINE® provide citations to published biomedical journal research articles for professionals. For more information, see the MEDLINE® Fact Sheet at and the TOXLINE® Fact Sheet at
  • DIRLINE® provides information about organizations dealing with drug information.

The Center for Drug Evaluation and Research (CDER) from the US Food and Drug Administration (FDA) has expertise to answer some drug information questions.

A CDER contact form is at or write to

FDA tools to find drug information, including formulations and interactions:

International Drug Information


Additional Resources

  • Contact your local public, hospital, or university library to ask what resources are available to you.
  • Look for information on a drug company's Web site or on other sites such as Drug Digest, which includes drug interactions and drug comparisons at
  • NLM does not maintain a list of gluten free drugs or foods. We suggest you check your pharmacy or the drug manufacturer for ingredients.

NLM is not responsible for the availability or content of external sites, nor does NLM endorse, warrant, or guarantee the products, services or information described or offered at other sites.

Related Resource

Learn About Drugs - Drug Information from the National Library of Medicine

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