Trepirium is a ganglion-blocking agent. During clinical testing of the administration of ganglion-blocking agent by inhalation it was established that drug aerosol of trepirium possesses high effectiveness, acts rapidly, and is relatively safe. Trepirium does not cause any local irritating effect. It blocks the n-cholinergic receptors of the autonomic ganglia (it inhibits the transmission of excitation from the preganglionic to the postganglionic fibers of the autonomic nerves) of the adrenal medulla and the sinocarotid region. Reduces the flow of vasoconstrictor impulses to the vessels and adrenaline secretion by the adrenal glands, weakens reflex pressor reactions, and lowers blood pressure. Trepirium is used for the treatment of cerebral or pulmonary edema, hypertensive crisis, nephropathy and eclampsia (in obstetric practice), for the hypotension control in anesthesia practice.