Out-of-network benefits â benefits provided under a health care benefits plan for services or supplies provided by doctors and other health care professionals who are not parties to a contract with a UnitedHealth Group affiliate.
Over-the-counter. Naproxen is used to temporarily reduce fever, as well as treat minor aches and pains due to: 1  minor pain of arthritis. 2  menstrual cramps. 3  the common cold. 4  muscular aches. 5  headache. 6  backache. 7  toothache.
Common naproxen side effects may include: 1  indigestion, heartburn, stomach pain, nausea; 2  headache, dizziness, drowsiness; 3  bruising, itching, rash; 4  swelling; or. 5  ringing in your ears.