cryptenamine cryptenamine cryptenamine (unitensen) is a mixture of 10 hypotensive alkaloids extracted from veratrum album (protoveratrines a and b; germitrine, neogermitrine, germerine, and germidine; jervine, rubijervine, and isorubijervine; and germbudine). it is used in the treatment of hypertension. cryptenamineprotoveratrine a, the main constituent of cryptenaminecombination ofveratrum alkaloidsantihypertensivetannic acidcounterionidentifierscas number1356-18-9drugbankdb00785chemspidernoneuniiqvo4n8484o (verify)