Thromboembolic disease seriously affects people's health,and even endangers life.Nattokinase(NK)is an alkaline serine protease with strong thrombolytic activity and low toxicity.However,when NK passes through the stomach,it is degraded by gastric acid and pepsin,and subsequently loses its thrombolytic activity.The application of preparation technology can form a protective layer and improve the high bioavailability of NK.This article briefly introduced the pharmacological properties of NK,and discussed the characteristic of different dosage forms.The development of NK preparation was prospected in order to promote its research and application.
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