Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) commonly used to relieve pain, reduce inflammation, and lower fever. It works by blocking certain chemicals in the body that cause inflammation and pain, making it effective for conditions like headaches, toothaches, and menstrual cramps. Available over-the-counter, ibuprofen can be found in various forms, including tablets, capsules, and liquid. It is important to follow the recommended dosage and consult a healthcare professional if you have any underlying health conditions or are taking other medications, as it may cause side effects or interact with other drugs.