Naproxen is a nonsteroidal anti-inflammatory drug (NSAID) and is commonly used for relief of a wide variety of pain, fever, inflammations, and stiffness. COX-2 selective and nonselective NSAIDs have been linked to increases in the number of serious and potentially fatal cardiovascular events, such as myocardial infarctions and strokes. Naproxen is however associated with the smallest overall cardiovascular risks. Naproxen seemed least harmful. Cardiovascular risk needs to be taken into account when prescribing any non-steroidal anti-inflammatory drug.The drug had roughly 50% of the associated risk of stroke as compared with ibuprofen and was also associated with a reduced number of myocardial infarctions as compared to control groups. As with other non-COX-2 selective NSAIDs, naproxen can cause gastrointestinal problems, such as heartburn, constipation, diarrhea, ulcers and stomach bleeding.