But pregnant women should avoid using it. Because mint can inhibit milk secretion, it is not suitable for lactating women. And because of peppermint powder, patients with lung deficiency, cough, fever and sweating due to yin deficiency should also use it with caution. In addition, the components of mint are volatile due to heat, so it is advisable to put them in after boiling water. And it has a refreshing and exciting effect. It is not advisable to drink too much in the morning so as not to interfere with sleep.