Therapeutic Group: Anti Spasmodic Presentation Drotapan tablet: Each tablet contains Drotaverine HCl INN equivalent to Drotaverine 40 mg. Description Drotaverine is a spasmolytic agent which acts directly on smooth muscle cells by adsorption on the cell surface. Drotaverine inhibits the phosphodiesterase enzyme which leads to an increase of the cAMP level producing smooth muscle cell […]