Ibuprofen USP For Compounding (API)Ibuprofen USP is an active pharmaceutical ingredient used for compounding to produce medication for pain relief, inflammation reduction, and fever reduction. It belongs to a class of medications called nonsteroidal anti inflammatory drugs (NSAIDs). Ibuprofen works by blocking the production of certain substances in the body that cause pain, inflammation, and fever. It is commonly used to treat conditions such as headaches, menstrual cramps, muscle