Drotaverine is an antispasmodic medication used to relieve smooth muscle spasms. It is sold under various brand names in different countries such as Drotin, Revalgin, No-Spa, and Spasmed. Although drotaverine is the common name used for this medication, it is known by many other synonyms such as Mephenaminium methylsulfate, HCl Dehydrobenzperidol, Dirox, Drotinine, Edanox, and Drover. These synonyms refer to the same medication and are often used interchangeably. As with any medication, it is important to consult a healthcare provider before taking it and only take it as directed to avoid any adverse effects.