Voltaren Emulgel 12 Hours is a topical pain relief gel containing diclofenac diethylamine that provides up to 12 hours of relief from pain, inflammation and swelling. It is specifically formulated for muscle and joint injuries, soft-tissue rheumatism, and mild arthritis of knee or finger. The active ingredient diclofenac diethylamine belongs to the class of non-steroidal anti-inflammatory drugs (NSAIDs). The gel format allows for targeted application directly to the affected area. It comes in a 50g tube size and has a non-greasy formula that quickly penetrates the skin to deliver the medication where it's needed most. The product is designed for external use only.