In Each Capsule: Other Information: Each capsule contains: sodium 20 mg. Store at 20-25 degrees C (68-77 degrees F). Avoid high humidity and excessive heat above 40 degrees C (104 degrees F). Protect from light. Read all directions and warnings before use. Keep carton. Naproxen sodium capsules, 220 mg (NSAID). Liquid filled capsules. Strength to last 12 hours. Questions or comments? 1-800-395-0689 (Mon-Fri 9am-5pm EST).