Flanax is an anti-inflammatory tablet that was invented by a pharmacist to provide all-day pain relief. How do you stop the pain of arthritis, back pain, and muscle pain? You need a pain reliever that reduces inflammation and is long-acting. Flanax Pain Reliever Tablets keep you pain-free all day long. Why does Flanax provide longer-lasting pain relief? It contains naproxen sodium and was formerly a prescription pain reliever. It is designed to last and is safe and effective. Pain Reliever Tablets provide longer lasting relief of minor aches and pains. Each pain relief tablet contains 220mg of naproxen sodium to alleviate pain due to headache, muscular aches, backache, toothache, minor arthritis pain, the common cold, and premenstrual and menstrual cramps. Flanax Pain Reliever Tablets can be used by adults and children 12 years of age and older. Start living pain free today with Flanax! LONG LASTING RELIEF: Each Flanax pain relief tablet has the strength to last up to 12 hours TARGETED MUSCLE AND BACK PAIN RELIEF: Relieves minor back and muscles aches and pains EFFECTIVE ARTHRITIS PAIN RELIEF: Fast, targeted JOINT pain relief that lasts.