WebMD上对板蓝根副作用的叙述，你看得懂的。

There isn't enough information to know if isatis is safe.

Special Precautions & Warnings:

Pregnancy and breast-feeding: Not enough is known about the use of isatis during pregnancy and breast-feeding. Stay on the safe side and avoid use.

Aspirinallergy: Isatis contains chemicals that are similar to the chemicals in aspirin. There is a concern that isatis might trigger an asthma attack or an allergic reaction in people who are allergic to aspirin.