Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) that is used to relieve pain, fever, and inflammation. [7] This includes painful menstrual periods, migraines, and rheumatoid arthritis. [7] It can be taken orally (by mouth) or intravenously. [7] It typically begins working within an hour. [7] 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. 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. Detailed Ibuprofen dosage information for adults and children. Includes dosages for Pain, Osteoarthritis, Rheumatoid Arthritis and more; plus renal, liver and dialysis adjustments. Ibuprofen (Advil, Motrin) treats minor aches and pains caused by the common cold, headaches, toothaches, back or muscle aches. NHS information about ibuprofen for adults, including what it's used for, who can use it, how to use it and side effects. 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. 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.