1.) The substance (cucurbitacin) thought to be effective as a dewormer is found mainly in the roots of some species of pumpkin, and to a lesser degree in the fruit and seeds. 2.) Unfortunately, the cucurbitacin is found mainly in very bitter pumpkins, which are not the kind that have been domesticated and are commonly available.“The bitter and toxic compounds inthese vegetables are cucurbitacins, which are well known in wild varieties of these food plants and their related species. The cultivated forms, on the other hand, have during the time in cultivation been selected for being free of the bitter and toxic compounds.” This is a very good thing, because…