NHS information about naproxen, including what it's used for, who can take it, how to take it and side effects. Detailed Naproxen dosage information for adults and children. Includes dosages for Pain, Osteoarthritis, Rheumatoid Arthritis and more; plus renal, liver and dialysis adjustments. Naproxen is a nonsteroidal anti-inflammatory drug (NSAID). It works by reducing hormones that cause inflammation and pain in the body. Naproxen is used to treat pain or inflammation caused by conditions such as arthritis, ankylosing spondylitis, tendinitis, bursitis, gout, or menstrual cramps. This article provides an overview of naproxen, including how it works, its uses, the potential side effects, and more. Naproxen is used as a treatment to relieve pain from various conditions such as headaches, muscle aches, tendonitis, dental pain, and menstrual cramps. It also reduces pain, swelling, and joint stiffness caused by conditions such as arthritis, bursitis, and gout attacks. Overview: Naproxen is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain, reduce swelling, and lower fever. Common side effects include belly pain, upset stomach, heartburn, or. Naproxen sodium is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain, reduce inflammation, and lower fever. It’s available over the counter under the brand name Aleve and in stronger prescription forms like Naprosyn and Anaprox. Its versatility makes it one of the most widely used pain relievers, treating everything from headaches and menstrual cramps to chronic arthritis. Learn about side effects, dosage, uses, and more for naproxen, which is a generic prescription oral tablet that treats many conditions, such as arthritis. Naproxen sodium is available as both an immediate-release and an extended-release tablet. The extended-release formulations (sometimes called sustained release , or enteric coated ) take longer to take effect than the immediate-release formulations and therefore are less useful when immediate pain relief is desired. Naproxen is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve symptoms of arthritis (eg, osteoarthritis, rheumatoid arthritis, or juvenile arthritis) such as inflammation, swelling, stiffness, and joint pain.