What is this blue pill with L368 printed on it?

It is a 220mg Naproxen Sodium

NAPROXEN is an anti-inflammatory drug. It relieves pain and inflammation associated with rheumatoid arthritis, osteoarthritis, and juvenile (childhood) Arthritis. Naproxen is also effective in treating other mild to moderate pain, including menstrual pain, headache, toothache, and temporarily reduces fever.

Image:

http://media.cornerdrugstore.com/dru...7/napr220f.jpg