Diclofenac is a non steroidal anti inflammatory drug (NSAID). This medicine works by reducing substances in the body that cause pain inflammation...learn more »

Prednisone is a steroid. Prednisone prevents the release of substances in the body that cause inflammation...learn more »

Aspirin is in a group of drugs called salicylates (sa-LIS-il-ates). It works by reducing substances in the body that cause pain, fever, and inflammation...learn more »

Codeine is in a group of drugs called narcotic pain medicines...learn more »