This topical painkiller uses heat therapy for the relief of muscular pains and stiffness. The warming effect of Deep Heat penetrates into the muscle helping to stimulate circulation and oxygenate painful tissue. Deep Heat Rub can be used for the symptomatic relief of backache, sciatica, lumbago, fibrositis, rheumatic pain, bruises, sprains and chilblains. Should be massaged into the affected area 2 to 3 times a day.