Can be boiled together, there is no contraindication, these several medicines are complementary to the yin and yang. There is no side effect depends on the individual physique and the amount of each medicine. If the qi is not weak and astragalus cast a large amount, may appear on the fire and some other symptoms; if the body of the wet and Yin Yin medicine cast a large amount, may aggravate the original symptoms. It is recommended that you go to a TCM doctor to see what kind of body type you belong to, and then consider which type of medicine to take.