Voltaren Emulgel 12 Hours is a topical pain relief gel containing diclofenac diethylamine. This 50g gel formulation provides up to 12 hours of targeted relief from pain, inflammation and swelling due to muscle and joint injuries, soft tissue rheumatism, and arthritis pain. The gel format allows for direct application to the affected area, where it penetrates deeply into the tissue to reduce inflammation and relieve pain. The non-greasy formula is easy to apply and absorbs quickly into the skin. For external use only. As with all medications, use as directed by your healthcare provider and read all warnings and instructions before use.