Voltaren Arthritis Pain Relief Gel helps you feel the joy of movement with a specialized formula, which combines the properties of a cream and a gel. This topical nonsteroidal anti-inflammatory drug (NSAID) contains diclofenac sodium and relieves arthritis pain, improves mobility, reduces joint stiffness, and soothes arthritis pain. While other topical pain relief products mask the pain, Voltaren Gel treats it. Face arthritis pain head-on with the prescription-strength power of Voltaren Gel.