Radian B Muscle Rub is used for Pain, Itching, Fungal infections of toenail, Warts, Cold sores, Hemorrhoids, Osteoarthritis, Respiratory tract diseases, Symptoms of heart disease, Eardrop and other conditions. Radian B Muscle Rub may also be used for purposes not listed in this medication guide. Radian B Muscle Rub contains Camphor, Capsicum Oleoresin, Menthol and Methyl Salicylate as active ingredients. Radian B Muscle Rub works by lowering the histamine H1 and muscarinic M3 receptor-mediated bronchoconstriction; suppressing the mitochondrial respiration; activating the activities of hepatic enzymes; works as a pain messenger in the body to reduce the pain sensation; temporarily relieving minor pain; inhibiting prostaglandin formation;