Drug Information Portal - The NLM Drug Information Portal gives users a gateway to selected drug information from the U.S. National Library of Medicine and other key U.S. Government agencies. At the top of the page are links to individual resources with potential drug information, including summaries tailored to various audiences. Resources include the NLM search systems useful in searching for a drug, NLM research resources, resources organized by audience and class, and other NIH and government resources such as FDA and CDC. https://druginfo.nlm.nih.gov/drugportal/
Medline Plus Drugs, Herbs, & supplements - Prescription and over-the-counter medication information are from AHFS® Consumer Medication Information, copyrighted by the American Society of Health-System Pharmacists (ASHP), Inc., Bethesda, Maryland; Copyright © 2020. https://medlineplus.gov/druginformation.html
FDA National Drug Code Directory - A directory of National Drug Codes or unique product identifiers used in the U.S. for drugs intended for human use. The Drug Listing Act of 1972 requires registered drug establishments to provide the FDA (U.S. Food and Drug Administration) with a current list of all drugs manufactured, prepared, propagated, compounded, or processed by it for commercial distribution. https://www.accessdata.fda.gov/scripts/cder/ndc/index.cfm