Lexicomp Online - Medical This link opens in a new windowLexicomp Online (medicine) database offers drug information, including interaction checkers, a drug identifier, patient education and toxicology information. It also includes a section on infectious diseases. The Lexicomp Online database provides access to clear point of care drug information, including dosing, administration, warnings and precautions, as well as clinical content such as clinical practice guidelines, and other tools. This database generally enables users to locate information on medications, conditions and/or procedures, international drugs, pregnancy, lactation and more.