Naproxen (Naprosyn, 
Anaprox DS) is an inexpensive drug used to reduce swelling and treat 
pain. It is also used for painful joint and muscular problems such as 
arthritis, tendinitis, bursitis, and 
gout. It is slightly more popular than comparable drugs. It is available in multiple generic and brand versions. Generic naproxen is covered by most Medicare and insurance plans, but some pharmacy coupons or cash prices may be lower.