What Are the Side Effects of Naproxen?

By Amy S. Jorgensen

Naproxen is a type of pain medication known as a non-steroidal anti-inflammatory drug. It is recommended in the treatment of arthritis, spondylitis, gout, tendinitis and body pain.

Allergic reaction

Patients who are prone to getting allergic reactions with NSAID-type medication have high possibilities of a repeat attack of rash and swelling with naproxen because it falls under this category of medication.

Peptic Ulcers

Patients who have suffered from peptic ulcers before may be at risk for gastrointestinal problems such as bleeding and ulcers and even punctures in the digestive tract when using naproxen.

Kidney Problems

Renal dysfunction is caused by using naproxen because of the decrease in prostaglandin synthesis. Patients suffering from renal toxicity are usually those with a past history of heart problems, liver problems and urinary problems.


According to Drugs.com, studies show that when naproxen was administered to pregnant women it passed through the placenta to the fetal tissue causing malformation and even miscarriage. It has also been seen in breast milk of lactating women, causing infants to vomit.

Cardiovascular Issues

Patients with heart problems and with history of hypertension should be advised of problems such as heart failure and recurring problems of hypertension with the use of naproxen.

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