Rehmannia glutinosa has the efficacy of clearing away heat and fire, removing vexation, diuretic, stopping vomiting and quenching thirst, and can be used to treat conditions such as vomiting, and hot and astringent pain (burning and stinging pain during urination, accompanied by frequent urination and urgency, and discomfort from traction in the lower abdomen). However, the efficacy of drinking boiled water may not be as good as that of the herbs after concocting and standardized decoction, and the therapeutic effect may not be as good for certain conditions.
Rehmannia glutinosa is cold in nature and belongs to the lung and stomach meridians. It has the effect of clearing away heat and fire, removing vexation, diuretic, stopping vomiting, generating fluids and quenching thirst. It can be used to treat lung-heat cough, fever and thirst, stomach-heat and vomiting, and hot shower and astringent pain. Note that people with cold spleen and stomach should be cautious.
Rehmannia glutinosa also has some of the above effects. However, the efficacy of boiled water may not be as good as that of the herbs after concocting and standardized decoction, and the therapeutic effect may not be as good for certain diseases.
If you need to use Chinese herbs, you can use them under the guidance of a professional doctor, do not use your own medicine, so as not to make a mistake.