Naproxen is part of the NSAID drug group (Non-Steroidal Anti-Inflammatory Drug). Naproxen is widely prescribed to help with the pain associated with osteo and rheumatoid arthritis, gout, menstrual cramps and bursitis. Naproxen also helps to relieve the stiffness, inflammation and fever that may accompany these health issues. Naproxen's more common over-the-counter name is Aleve.

As with most medications, Naproxen can cause serious and less serious side effects. Less serious side effects include nausea, upset stomach, blurry vision, heart burn, bloating, headache and diarrhea. These side effects are usually only temporary. Limiting the use of Naproxen or taking a smaller dosage may help relieve these side effects. If the effects continue for more than a week, see a medical doctor as soon as possible as they may be a symptom of a larger medical issue.

More serious side effects may present themselves. If you experience any of the following, contact a medical doctor immediately: chest pain, sudden weakness, loss of breath, coughing up blood, seizures, or vomit that resembles coffee grounds. Those who are pregnant should avoid taking Naproxen, as it may damage the fetus. Those with a history of heart disease, or those at risk for heart related complications such as hypertension, heart attack or stroke should not take Naproxen. The elderly should be especially careful with the use of Naproxen, as serious gastrointestinal problems have been noted by those with more aged stomachs and intestines. These events can include ulceration, bleeding, and even perforation of the stomach and intestines. Those who are taking blood thinners, or have problems with blood clotting, may also have adverse effects from Narpoxen, as the drug can have an inhibiting effect on blood clotting.

While taking Naproxen avoid taking similar medications, such as ibuprofen, aspirin or ketoprofen. The combination of these drugs could cause an overdose. Patients on any type of antidepressant or mood stabilizing drug should also avoid using Naproxen. ACE inhibitors for blood pressure, Lithium, blood thinners, steroids and any other members of the NSAID drug group should also be avoided while taking Naproxen.

Allergic side effects have been reported by those who are sensitive to, or allergic to, drugs such as aspirin or other non-steroid anti-inflammatory medications. If you have signs of rash, trouble breathing or uncontrollable itching, see a doctor immediately.