Papaverine Home>Pharmacy>Drugs_and_Medications>P>Papaverine     Web Pages Papaverine Full prescribing information from RxList. Lycaeum: Papaverine Botanical information on this opium derivative, with links to photomicrograph and related substances. Papaverine - Medline Plus Brief summary for consumers in html format. National MS Society: Papaverine Information for patients about this vasodilator, which is used to treat erectile dysfunction in multiple sclerosis patients.