Abstract
AT the present time there is general concern over the merits of various orally prescribed enzymatic preparations. Most of the available clinical data are inadequately controlled. This is mainly so because of the almost impossible task of setting up proper controls in situations in which these preparations are used clinically. Because of the growing importance of this type of therapy and uneasiness over the inadequacy of available clinical data certain basic facts become highly important. Not much information is available concerning the absorption and inactivation of most of these preparations in man. Such data must be available before anything like . . .