Drug - Wikipedia
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.com – Know More. Be Sure.
Drug and health information, from pharmacists you can trust. Browse A-Z: drugs, treatments, conditions, drug classes or symptoms. Drugs.com is the most popular, comprehensive and up …
Drugs and Supplements - Mayo Clinic
Look up information about prescription drugs, over-the-counter medications, herbs, vitamins and supplements.
Drugs | FDA - U.S. Food and Drug Administration
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
Drug | Definition, Types, Interactions, Abuse, & Facts ...
Dec 26, 2025 · 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.
WebMD's A to Z Drug Database
Your trusted source of information for prescription drugs and medications.
DRUG Definition & Meaning - Merriam-Webster
The meaning of DRUG is a substance used as a medication or in the preparation of medication. How to use drug in a sentence.
Drugs, Herbs and Supplements - MedlinePlus
Learn about the side effects, dosages, and interactions of prescription drugs, over-the-counter medicines, herbs, and supplements.
Drugs A to Z - National Institute on Drug Abuse (NIDA)
Apr 10, 2025 · 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 …
Drug - definition of drug by The Free Dictionary
1. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or to otherwise enhance physical or mental well-being. a. any substance listed in any of the …