Nattokinase is recommended to be taken at 2000~4000FU a day (FU refers to the amount of nattokinase in each capsule of Nattokinase product), and it is recommended to consult a professional nutritionist for the specific dosage. Research has proved that Nattokinase has certain thrombolytic effect, but at present in our country does not develop it as a medicine, only as a health care product, therefore, Nattokinase is not a substitute for drug treatment, only as a dietary supplement with auxiliary health care effect. In the international regulations, the daily recommended dosage of nattokinase is 2,000~4,000FU, but it should be noted that it may not be suitable for everyone to use, and the instructions should be read in detail before use. Do not blindly use a large amount on your own to avoid discomfort.