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Ibuprofen (INN) (pronounced /ˈaɪbjuːproʊfɛn/ or /aɪbjuːˈproʊfən/; ahy-byoo-proh-fen; from the now-outdated nomenclature iso-butyl-propanoic-phenolic acid) is a nonsteroidal anti-inflammatory drug (NSAID) originally marketed as Brufen, and since then under various other trademarks (see availability section), the most notable ones being Nurofen, Advil, and Nuprin.[1] It is used for relief of symptoms of arthritis, primary dysmenorrhea, fever,[2] and as an analgesic, especially where there is an inflammatory component. Ibuprofen is known to have an antiplatelet effect, though it is relatively mild and short-lived when compared with aspirin or other better-known antiplatelet drugs. In general, ibuprofen also acts as a vasodilator, having been shown to dilate coronary arteries and some other blood vessels. Ibuprofen is a core medicine in the World Health Organization's "Essential Drugs List", which is a list of minimum medical needs for a basic healthcare system.[3]