StatPearls is a comprehensive and constantly updated medical database for physicians, physician assistants, nurses, nurse practitioners, pharmacists, and other clinicians. Their library is utilized for CME/CE, test reviews, and medical schools worldwide.
PubMed is a free search engine accessing primarily the MEDLINE database of references and abstracts on life sciences and biomedical topics. The database is maintained by the United States National Library of Medicine (NLM) at the National Institutes of Health.