Unveil the world of drugs: from depressants to opioids, explore the types, effects, and risks. Dive into the realm of substances. A drug is any chemical substance that affects the functioning of living things and the organisms (such as bacteria, fungi, and viruses) that infect them. Drugs A to Z gives basic information on drugs with addictive potential, including how they are used, how they make people feel, and their health effects, including risk for substance use disorder. Treatment options for substance use disorders related to these drugs are also included. Misusing prescription medications — like Adderall®, Vicodin®, and Xanax® — can lead to lasting problems like addiction. Not to mention leaving you vulnerable to an overdose. Use our drug interaction checker to find potentially harmful drug, food, and alcohol interactions. Type a drug name in the box above to get started. Not all drugs interact, and not every interaction means you must stop taking one of your medications. Online database of the most popular drugs and their side effects, interactions, and use. Recreational drug use is the use of a drug (legal, controlled, or illegal) with the primary intention of altering the state of consciousness through alteration of the central nervous system in order to create positive emotions and feelings. Find information about drug shortages caused by manufacturing and quality problems, delays, and discontinuations. Find information about finished drug products, unfinished drugs, and compounded. Drugs.com is the most popular, comprehensive and up-to-date source of drug information online. Providing free, peer-reviewed, accurate and independent data on more than 24,000 prescription drugs, over-the-counter medicines & natural products. Find detailed information on prescription drugs, OTC medications, vitamins and dietary supplements, including their uses, side effects, and interactions.