Brufen 400 mg is a medication containing ibuprofen, a non-steroidal anti-inflammatory drug (NSAID). Each pack contains 30 tablets of 400 mg strength. It is used to relieve pain, reduce inflammation, and lower fever in various conditions. The active ingredient ibuprofen works by blocking the production of certain natural substances that cause inflammation, helping to decrease pain, fever, and inflammation. This medication should only be taken as prescribed by a healthcare professional. Common uses include treatment of headaches, dental pain, menstrual cramps, muscle aches, and arthritis symptoms.