THE NATIONAL LIBRARY OF MEDICINE (NLM) offers a wide range of free health information and resources for clinicians and patients. Nurses and other healthcare professionals can use these resources while making evidence-based decisions for patients in their care. NLM is part of the federally run National Institutes of Health.

Clinicaltrials.gov

http://www.clinicaltrials.gov

This database contains information on nearly 270,000 publicly and privately funded studies. Some studies included here are complete and contain research findings, but many others are ongoing and still open to potential participants. This database contains both clinical and observational studies.

DailyMed

http://www.dailymed.nlm.nih.gov/dailymed

DailyMed provides information on marketed drugs. The official provider of label information for the FDA, this site offers clinicians up-to-date information about indications, contraindications, adverse reactions, dosages, and other guidelines found in medication package inserts. In addition, this resource includes an extensive search database on drugs for pets and other animals. Users can also find FDA regulatory guidances, related articles, online workshops, presentations, and more.

Drug information portal

https://druginfo.nlm.nih.gov/drugportal

Read comprehensive details about more than 53,000 substances through NLM's drug portal. Intended as a "middle ground" resource, it includes information for patients as well as healthcare professionals and medical researchers. It covers drugs from the time they entered clinical trials through their introduction into the market.

PubMed

http://www.ncbi.nlm.nih.gov/pubmed

This resource for clinicians and the public contains more than 28 million journal citations and abstracts for biomedical literature from Medline, life science journals, and online books. Access is free, and many citations include links to the full article from PubMed Central and publisher websites.