Dosing Considerations. mg of naproxen sodium contains mg of naproxen. Delayed-release formulation not recommended for acute pain. Take with. Jump to How to take naproxen - It is often recommended that a double dose ( mg) be taken for Do not chew or break the tablets, as this will stop the. Mar 14, - Detailed Naproxen dosage information for adults and children. -Maximum dose: Initial total daily dose not to exceed mg; thereafter, not . These events can occur at any time during use and without warning symptoms.