Information about FDA-approved brand name and generic prescription and over-the-counter human drugs and biological therapeutic products. A drug is any chemical substance other than a nutrient or an essential dietary ingredient, which, when administered to a living organism, produces a biological effect. [1][2] Consumption of drugs can be via inhalation, injection, smoking, ingestion, absorption via a patch on the skin, suppository, or dissolution under the tongue. The mission of the Drug Enforcement Administration (DEA) is to ensure the safety and health of American communities by combating criminal drug networks bringing harm, violence, overdoses, and poisonings to the United States. To accomplish this mission, the DEA employs approximately 10,000 personnel throughout the world – Special Agents, Diversion Investigators, Intelligence Analysts. Use Drugs.com’s Drug Interaction Checker, trusted by doctors and patients, to instantly review your meds for unsafe combinations. 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. The Center for Drug Evaluation and Research (CDER) ensures that safe and effective drugs are available to improve the health of the people in the United States Find detailed information on prescription drugs, OTC medications, vitamins and dietary supplements, including their uses, side effects, and interactions. Drug molecules may combine with receptors to initiate a series of physiological and biochemical changes. Receptor-mediated drug effects involve two distinct processes: binding, which is the formation of the drug-receptor complex, and receptor activation, which moderates the effect. Drugs can mess with your body and your mind. Learn the real facts about fake pills, weed, alcohol, and more—so you can stay in control and protect yourself. Community misused or used drugs chart in an A to Z listing. 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.