This blue, oval pill imprinted with G 0 is a naproxen sodium 550 MG (as naproxen 500 MG) Oral Tablet, per the NIH.
Naproxen Sodium is a human prescription drug. The active pharmaceutical ingredient is naproxen sodium and is classified as, "Cyclooxygenase Inhibitors [MoA], Nonsteroidal Anti-inflammatory Compounds [Chemical/Ingredient], Nonsteroidal Anti-inflammatory Drug [EPC]."
This pill is made by a total of 6 firms: (1) Glenmark Generics Inc., USA, (2) STAT Rx USA LLC, (3) Blenheim Pharmacal, Inc., (4) H.J. Harkins Company, Inc., (5) Altura Pharmaceuticals, Inc., and (6) Physicians Total Care, Inc.
There is 1 other blue pill that with a similar imprint: "G 0". They may be a different dosage of the same drug or a different drug entirely.