Find detailed information on prescription drugs, OTC medications, vitamins and dietary supplements, including their uses, side effects, and interactions. Johns Hopkins Medicine is a leading health system and academic institution in the U.S. Find information about doctors, locations, appointments, billing, research, education and more. Medicine encompasses a variety of health care practices which evolved to maintain and restore health through the prevention and treatment of illness and infection. You may take medicines every day or only once in a while. Either way, make sure your medicines are safe and will help you get better. Learn more. Find information on health conditions, wellness issues, and more in easy-to-read language on MedlinePlus, the up-to-date, trusted health information site from the NIH and the National Library of Medicine. 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. medicine, the practice concerned with the maintenance of health and the prevention, alleviation, or cure of disease. What Is a Medicine and How Does It Work? A medicine (medication or drug) is a substance used to prevent, diagnose, treat, or cure diseases. Medicines contain active ingredients that produce therapeutic effects by interacting with specific targets in your body, such as receptors, enzymes, or cells. The following outline is provided as an overview of and topical guide to medicine: Medicine – science of healing. It encompasses a variety of health care practices evolved to maintain health by the prevention and treatment of illness. Medicine aims to promote and maintain health and wellbeing. Conventional modern medicine is sometimes called allopathic medicine. It involves the use of drugs or surgery, often supported by.