Methods for the treatment of human cancers, daily dosage forms for cancer patients, and methods of formulating the dosage forms are provided wherein the daily dosage form contains from about 10-6,000 mg of each of β-sitosterol, isovanillin, and linolenic acid. Preferably, the dosage forms are formulated by first creating an aqueous decoction of Arum palaestinum Boiss, followed by fortification of the decoction with additional quantities of β-sitosterol, isovanillin, and linolenic acid.