Voltaren and Voltarol contain the sodium salt of diclofenac. In the United Kingdom, Voltarol can be supplied with either the sodium salt or the potassium salt, while Cataflam, sold in some other countries, is the potassium salt only. Voltaren oral tablets are used to treat mild to moderate pain, or signs and symptoms of osteoarthritis or rheumatoid arthritis. Voltaren is also used to treat ankylosing spondylitis. Voltaren is a medicated gel that you can apply to the skin for relief from muscle and joint pain. It may take multiple days of application for significant pain relief. Voltaren (diclofenac) is used to treat symptoms of pain associated with rheumatoid arthritis, osteoarthritis, ankylosing spondylitis, dysmenorrhea, and mild-to-moderate pain. Topical diclofenac (Voltaren) is commonly used to treat arthritis pain in the hands, wrists, elbows, feet, ankles, or knees. Learn more about Voltaren gel for arthritis. Buy Voltaren Arthritis Pain Gel, Diclofenac Pain Relief Cream, 100 g, 2 Pack | Prescription Strength Topical Arthritis Pain Relief with Diclofenac, Targets Inflammation, Improves Mobility, Easy Open Cap on Amazon.com FREE SHIPPING on qualified orders Voltaren Arthritis Pain Gel is a powerful medicated gel that directly targets and treats arthritis at the site of pain. It has a triple effect of relieving arthritis pain, improving mobility, and reducing stiffness to help you move more freely. Brand Name US Brand Name Cambia Cataflam Voltaren Voltaren-XR Zipsor Zorvolex Back to top Voltaren gel contains diclofenac, a nonsteroidal anti-inflammatory drug (NSAID). Diclofenac works by reducing substances in the body that cause pain and inflammation. The 1 doctor recommended OTC topical pain relief brand, Voltaren is approved for arthritis pain. It has a triple effect that relieves arthritis pain, improves mobility and reduces stiffness to provide prescription-strength relief over the counter and keep you in control.