Drugs.com, WebMD and MedlinePlus each offer information about drug interactions. Each website contains details of potential interactions between different drugs, drugs and herbs, drugs and other dietary supplements, and drugs and food.
The Interactions Checker on Drugs.com allows people to search drug interactions concerning one drug or several drugs simultaneously, the Drugs.com site reveals. Interactions Checker recognizes the generic names of over-the-counter drugs and ingredients, such as acetaminophen, and prescription drugs. It also recognizes the brand names of drugs, such as Tylenol.
WebMD's drug interactions search engine is similar, according to its website. On the same webpage as the search engine is a list of top drugs, a dictionary of drugs and medications, and a list of medical conditions. One can search by either of these three terms. Each entry for a drug includes interactions associated with it, side effects, precautions and reviews by people who have taken the drug.
MedlinePlus, a service of the U.S. National Library of Medicine, allows people to search for interactions between different drugs, drugs and herbs, or drugs and supplements. Drugs are presented in alphabetical order, and clicking on a letter leads to a list of drugs whose names begin with the selected letter, according to the MedlinePlus website. Each drug definition accompanies info about interactions and dietary instructions to consider.