Voltarol Emulgel provides effective pain relief for rheumatic, joint and muscular sprains, strains and bruises. Its soothing, cooling formula contains diclofenac, an NSAID with anti-inflammatory properties. The easy-to-open cap makes it convenient to use. This non-greasy and non-staining gel is available without a prescription and can be used to treat tennis elbow, backache, joint pain and stiffness, helping to restore your mobility.