Overview: Ibuprofen is used to reduce fever, pain, and swelling. It works by blocking certain substances in the body that cause pain, inflammation, and fever. Common side effects include stomach. NHS information about ibuprofen for adults, including what it's used for, who can use it, how to use it and side effects. Ibuprofen: learn about side effects, dosage, special precautions, and more on MedlinePlus Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) that can reduce a fever and also treats mild to moderate pain, inflammation and arthritis. Ibuprofen is used to reduce fever and treat pain or inflammation caused by many conditions such as headache, toothache, back pain, arthritis, menstrual cramps, or minor injury. Ibuprofen is used primarily to treat fever (including post-vaccination fever), mild to moderate pain (including pain relief after surgery), painful menstruation, osteoarthritis, dental pain, headaches, and pain from kidney stones. Ibuprofen is a pain reliever and fever reducer used to temporarily relieve minor aches and pains. Ibuprofen is also used to temporarily reduce fever. Learn about side effects, dosages, drug interactions, and more. Ibuprofen is a pain medicine used to manage mild to moderate pain, fever, inflammation, menstrual cramps, and types of arthritis. Common side effects are drowsiness, nausea, diarrhea, constipation, and ringing in the ears. Discover everything you need to know about Ibuprofen – from uses and dosage to side effects and safety precautions. Get the facts on how to take it safely for pain relief and inflammation management. Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) used to treat mild to moderate pain, and helps to relieve symptoms of arthritis (osteoarthritis, rheumatoid arthritis, or juvenile arthritis), such as inflammation, swelling, stiffness, and joint pain.