Voltarol non-medicated Heat Patch is designed to target back and muscle pain, providing up to 8 hours of localized pain relieving heat which continues to work even after the removal of the patch. The thin, self-adhesive, odourless patch provides effective pain relief and muscle relaxation in a non-medicated, tablet-free format. The Voltarol Heat Patch is a non-medicated patch which provides targeted back and muscle pain relief by delivering up to 8 hours long-lasting deep penetrating heat. The continuous low-level heat from the patch works by stimulating heat receptors to relieve pain; increasing blood flow to relax stiff muscles, reducing muscle spasms and delivering the body's natural pain relievers. It is suitable for women and men who experience back and muscle pain. Providing up to 8 hours of localized pain relief, thin, self-adhesive and odourless patch, non-medicated, tablet-free format, increasing blood flow to relax stiff muscles.