An alkaloid found in the root of RAUWOLFIA SERPENTINA, among other plant sources. It is a class Ia antiarrhythmic agent that apparently acts by changing the shape and threshold of cardiac action potentials.

Synonyms: Cardiorythmine, Wolfina, Gilurtymal, 1PON08459R, Rauverid, Ajmalan-17,21-diol, (17R,21alpha)-, 140MW6WGAF, 0, Ajmaline Hydrochloride, Serenol, Ajmaline, Aritmina, Tachmalin