The side effect of Zhongqi nattokinase capsule is that it can cause vomiting and nausea in the throat, because it is a powerful thrombolytic substance with high viscosity. If people have indigestion or cough or act inadvertently when taking nattokinase capsule, they will not be able to properly serve nattokinase, but will cause acute stroke or cardiovascular and cerebrovascular diseases. So this is the question about whether Zhongqi nattokinase capsule has side effects. Its side effects are not found under normal circumstances, but we should pay more attention when taking drugs. However, if you have some gastrointestinal indigestion or sore throat and have a sticky feeling of sticking to your throat, it means that you have some side effects when taking nattokinase capsules.