Voltarol Emulgel is a topical anti-inflammatory gel designed to relieve pain and reduce inflammation in joints and muscles. It contains the active ingredient diclofenac diethylammonium, a nonsteroidal anti-inflammatory drug (NSAID) that works by targeting the root cause of pain and inflammation. The emulgel formula is a combination of a gel and cream, making it easy to absorb through the skin while providing a cooling and soothing effect.