Olfen 50mg is a medication containing diclofenac sodium as the active ingredient. It comes in a package of 20 tablets and is used as an anti-inflammatory and antirheumatic treatment. This medication belongs to the class of non-steroidal anti-inflammatory drugs (NSAIDs). Each tablet contains 50mg of diclofenac sodium. The package contains 20 tablets. As with any medication, this should only be taken under proper medical supervision and prescription.