中药地榆、石榴皮、老鹳草、虎杖、仙鹤草、侧柏、萹蓄、五倍子等除内含其它成分外,均含有大量鞣质。由于鞣质的理化性质,可与酶制剂产生相互影响,致使后者效果降低。酶制剂(胃蛋白酶、胰酶、菠萝酶、蛋白酶、淀粉酶、多酶等)在临床上为常用药物。其化学本质属蛋白质,而蛋白质是由氨基酸通过肽键组成的。 Chinese herbs, pomegranate rind, geranium, Polygonum cuspidatum, Agrimonia pilosa, Platycladus orientalis, Chinese wolfberry fruit and Galla chinensis contain a large amount of tannins in addition to other ingredients. Due to the physicochemical properties of tannins, they can interact with enzyme preparations, resulting in a lower effect of the latter. Enzyme preparations (pepsin, pancreatin, pineapple, protease, amylase, multi-enzyme, etc.) are clinically used drugs. Its chemical nature is a protein, and proteins are composed of amino acids through peptide bonds.