Alkaloids of Veratrum
They are obtained from 12 known species and some of them are used as hypotensive as the cryptenamine.
They are obtained from the Vinca Rosae, known as Madagascar Rosy Periwinkle. Its alkaloids are recognized by its antitumor actions.
There is an extensive literature about the vincristine and vinblastine. They are indicated in acute leukemia, Hodgkin's disease and other lymphomas.
In this heterogeneous group there are several alkaloids officially and unofficially recognized, among which are:
• Colchicine for the treatment of gout.
• Emetine used in severe amebeasis.
• Ephedrine as arterial antihypotensive and bronchodilator.
• Pilocarpine for ocular hypertension.