Papaverine hydrochloride is a myotropic antispasmodic.
It is an inhibitor of the enzyme phosphodiesterase and causes intracellular accumulation of cyclic 3 ', 5'-adenosine monophosphate and a decrease in the calcium content, which leads to a violation of smooth muscle contractility and relaxation.
The effect of papaverine hydrochloride on the central nervous system is poorly expressed, but it has a sedative effect only in large doses.
Reduces the tone of the smooth muscles of the internal organs (gastrointestinal tract, airways, urogenital system) and vessels and therefore has a vasodilating and spasmolytic effect.
In large doses reduces the excitability of the heart muscle and slows intracardiac conduction.