Aleve is a nonsteroidal anti-inflammatory drug (NSAID) that is commonly used to relieve pain and reduce inflammation. It is often used to treat conditions such as arthritis, menstrual cramps, headaches, and muscle aches. Aleve works by blocking the production of certain chemicals in the body that cause pain and inflammation. It is available over-the-counter in various forms, including tablets, caplets, and liquid gels. It is important to follow the recommended dosage instructions and consult a healthcare professional before using Aleve, especially if you have any underlying health conditions or are taking other medications.