Specification: Each tablet contains Drotaverine 0.04g. Authentication: GMP Quality standard: CP2005 Action and Use: structurally related to papaverine. Drotaverine is a selective inhibitor of phosphodiesterase 4, and has no anticholinergic effects. Packing: 40mg/tablets*10tablets/blister*2blisters/box Storage: To be kept in a dry place. Quality guarantee term: Three years.