
Naproxen: Side Effects and Overdose Concerns
Naproxen is a nonsteroidal anti-inflammatory drug that decreases pain and inflammation and reduces fever. Side effects include nausea and stomachache, as well as mild drowsiness, headache, and dizziness. Acute overdose and chronic use may cause reversible kidney toxicity. A naproxen overdose is usually not considered serious unless a large amount is taken.