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.
Naproxen side effects. The most common side effects from naproxen are: rash, ringing in the ears, headaches, dizziness, drowsiness, abdominal pain, nausea, diarrhea, constipation, heartburn, fluid retention, and; shortness of breath. Other important side effects include: fluid retention, blood clots, heart attacks, hypertension, and; heart failure.