Aleve Pain Reliever and Fever Reducer 220mg Caplets offer proven strength and long-lasting relief from minor pain and fever. Each Naproxen Sodium caplet has the strength to last up to 12 hours providing powerful pain relief from minor pain of arthritis, backaches, menstrual cramps, muscular aches, backache, toothache, headache and the common cold. This pain medicine also temporarily reduces fever and comes in small, oval caplets that are easy to swallow. Pain happens. Aleve it.