A medicinal enzyme inhibitor is often judged by its specificity (its lack of binding to other proteins) and its potency (its dissociation constant, which indicates the concentration needed to inhibit the enzyme).
Et medicinal enzyminhibitor dømmes ofte efter dens specificitet (dens mangel på binding til andre proteiner) og dens potens (dens dissocieringskonstant, som indikerer koncentrationen behøvet for at inhibere enzymet).