Ibuprophen is a non-steroidal anti-inflammatory drug, like aspirin. It is a cyclooxygenase inhibitor, interfering with COX-1 and COX-2 forms of that enzyme. Its effects on COX-2 give it fever reducing (antipyretic) abilities, analgesic (pain relief) functions, and anti-inflammatory functions. Its effects on COX-1 give it the undesirable effects as an anticoagulant and as an irritant of the stomach lining.
Ibuprofen is used to relieve fever and pain, and symptoms of arthritis and menstrual cramping. It may also reduce the dizziness associated with standing up quickly (called orthostatic hypotension), and some studies have shown beneficial effects on Alzheimer's disease and Parkinson's disease.
ibuprofen: InChI=1/C13H18O2/c1-9(2)8-11-4-6-12(7-5-11)10(3)13(14)15/h4-7,9-10H,8H2,1-3H3,(H,14,15)
ibuprofen: InChI=1/C13H18O2/c1-9(2)8-11-4-6-12(7-5-11)10(3)13(14)15/h4-7,9-10H,8H2,1-3H3,(H,14,15)/t10-/m1/s1/f/h14H
ibuprofen: InChI=1/C13H18O2/c1-9(2)8-11-4-6-12(7-5-11)10(3)13(14)15/h4-7,9-10H,8H2,1-3H3,(H,14,15)/t10-/m0/s1/f/h14H
acetylsalicylic acid: InChI=1/C9H8O4/c1-6(10)13-8-5-3-2-4-7(8)9(11)12/h2-5H,1H3,(H,11,12)/f/h11H
acetaminophen: InChI=1/C8H9NO2/c1-6(10)9-7-2-4-8(11)5-3-7/h2-5,11H,1H3,(H,9,10)
naproxen: InChI=1/C14H14O3/c1-9(14(15)16)10-3-4-12-8-13(17-2)6-5-11(12)7-10/h3-9H,1-2H3,(H,15,16)/f/h15H