oltarol non-medicated Heat Patch is designed to target back and muscle pain, providing up to 8 hours of localised 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. When to use Voltarol Heat Patch When back and muscle pain strikes, the heat patch's low level heat provides relieving warmth for up to 8 hours without a tablet How Voltarol Heat Patch Works 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 Effective back and muscle pain relief without a tablet, Up to 8 hours of pain relieving heat, Continues to work after the removal of the patch, Thin, self-adhesive and odourless