Nurofen muscle heat patches use heat therapy to treat the cause of muscle and back pain they work by increasing blood flow to the painful area and relaxing tight and sore muscles helping you get back to being active and speeding up your recovery up to 8 hour relief from r r muscle pain r r backaches r r neck pain r r shoulder pain r r these odourless patches are held securely in place by a low irritancy adhesive and are flexible enough to move freely with your body the slim discreet desig