Vasodilatory and antispasmodic. Has hypotensive, vasodilating effect, stimulates the function of the spinal cord, has moderate immunostimulating activity.
Has direct spasmolytic effect on smooth muscles of blood vessels and internal organs. The drug causes a short (2-3 hours) and a moderate hypotensive effect, is well tolerated. Causes a brief expansion of cerebral vessels in chronic brain hypoxia caused by local circulatory disorders (cerebral artery sclerosis).
It facilitates synaptic transmission in the spinal cord.
Has immunomodulating activity. Due to the regulation of the relation
concentrations of cGMP and cAMP in immune cells increases the cGMP content that leads to the proliferation of mature sensitized T and B lymphocytes, their secretion of mutually regulating factors, cooperative reaction and activation of the final effector function of the cells. The drug stimulates the production of antibodies, enhances the phagocytic activity of leukocytes, macrophages, improves the synthesis of interferon, but the immunomodulating effect develops slowly.