What is Tetramisole Hydrochloride? Tetraimidazole hydrochloride, also known as DL-2,3,5,6-tetrahydro-6-phenylimidazo2,1-bthiazole hydrochloride, white crystalline powder, bitter and astringent, easily soluble in water , slightly soluble in ethanol, is a highly effective, low-toxic, broad-spectrum v