Mayo Clinic explains that the proper dosage of naproxen depends on the patient, and this dosage must not exceed the recommendation. For instance, adults take a different amount than children, and patients take a certain amount depending on the type of pain or affliction. Furthermore, the strength of the medication dictates the recommended amount of naproxen.
Adults with rheumatoid arthritis, osteoarthritis and ankylosing spondylitis only take 250 milligrams, 375 milligrams or 500 milligrams of naproxen tablets and oral suspension medications twice a day, once in the morning and once in the evening, according to Mayo Clinic. However, sometimes a doctor increases this dosage to 1500 milligrams per day. Doctors base the dosage for children from age 2 and older on weight and tend to keep this dosage around 5 milligrams per kilogram of body weight twice a day.
Mayo Clinic also recommends that adults suffering from bursitis, tendinitis, menstrual cramps and other kinds of pain use 500 milligrams for the first dose, then 250 milligrams every six to eight hours as needed. Adults with acute gout must take 750 milligrams for the first dose, then 250 milligrams every eight hours until the attack passes. However, these dosages vary for controlled-release tablets, delayed-release tablets and sodium tablets.