437. Hoang-nan or Hwang-nao.—Tropical Bindweed

Botanical name: 

437. HOANG-NAN or HWANG-NAO.—TROPICAL BINDWEED. The bark of Strych'nos malaccen'sis Bentham, a creeping vine growing in the mountains of Tonquin. This bark is in general use among the natives of Tonquin, Cochin-China, Venezuela, etc., as a remedy in leprosy and hydrophobia, and as an antisyphilitic and alterative. First brought to the notice of the medical profession by the missionary fathers. It contains strychnine and brucine in about equal proportions, and probably has about the same range in medicine as nux vomica. Dose: ½ to 5 gr. (0.0324 to 0.3 Gm.).

A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.