Mecamylamine, a New, Orally Effective,

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Abstract
Stone and his co-workers * have reported recently on certain unusual pharmacological properties of mecamylamine (3-methylaminoisocamphane) hydrochloride. This compound, a secondary amine, produces a marked and prolonged degree of blood pressure reduction and ganglionic blockade in animals. Mecamylamine also is well absorbed from the gastrointestinal tract, the L. D.50being approximately the same whether the drug is adminished subcutaneously or orally. By contrast, previously successful ganglion-blocking agents, which are tertiary amines, are poorly absorbed from the gastrointestinal tract. The ratio of oral to subcutaneous hypotensive dosages of the latter drugs in man is approximately 15: 1. † In patients under treatment with ganglionblocking agents it is possible that some of the difficulties of clinical management, such as irregular fluctuations of blood pressure and gastrointestinal atony, may be due to the poor absorption and, hence, large local accumulations of the previously available compounds in the gastrointestinal tract. It seemed worth while,

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