What happens if I overdose on naproxen-sumatriptan?
Seek emergency medical attention if you think you have used too much of this medicine. Symptoms of a sumatriptan and naproxen overdose are unknown, but may include dizziness, drowsiness, heartburn, stomach pain, nausea, vomiting, breathing problems, black or bloody stools, coughing up blood, and seizure (convulsions).