Selenicereus grandiflorus - Night-Blooming Cereus
"CONSTITUENTS: -
PREPARATIONS: Extractum Cacti Fluidum, Fluid Extract of Cactus. Dose: from one to twenty minims. Tinctura Cacti, Tincture of Cactus. Dose: from five to thirty minims.
Therapy: This agent is prescribed where the heart muscle is enfeebled, where there is progressive valvular inefficiency, with irregular or intermittent pulse. It is valuable in mitral or aortic regurgitation from whatever cause.
It is an exceedingly useful agent in functional irregularity of the heart, however evidenced, if due to gastric irritation, as the agent in doses of from one to three minims, soothes gastric irritability and imparts tone and improved function, in wide contrast to digitalis, which irritates the stomach...."
(Finley Ellingwood: The American Materia Medica, Therapeutics and Pharmacognosy, 1915)