SUPRITOL-40 SR TABLETS with a powerful formulation of Isoxsuprine HCl 40mg is a vasodilator and uterine relaxant used to improve blood circulation and relieve conditions caused by reduced blood flow. It helps relax the smooth muscles of blood vessels, enhancing circulation to the limbs and other tissues, and is commonly prescribed for peripheral vascular disorders such as Raynaud’s phenomenon and other conditions associated with poor peripheral blood flow.