There is no research related to the five contraindications of rehmannia root in water, generally speaking, people with cold spleen and stomach (spleen and stomach weakness and cold) should be cautious to use rehmannia root in water, and people who are allergic to rehmannia root should be prohibited from using rehmannia root in water.
Reed root is a traditional Chinese medicine, for the grass family reed plant reed fresh or dry rhizome. It is sweet in flavor, cold in nature, and belongs to the lung and stomach meridians. This product is mainly decocted for internal use. It has the efficacy of clearing heat and fire (removing heat and fire from the body), generating fluids to quench thirst (promoting the production of fluids to relieve thirst), removing vexation, stopping vomiting, and inducing diuresis.
It can be used in the treatment of lung-heat cough, heat drenching (burning and stinging pain evident during urination, accompanied by frequent urination and urgency, and discomfort of traction in the lower abdomen) and astringent pain, fever and thirst, lung carbuncle and vomiting of pus, and stomach heat and vomiting.
Adverse effects of Rehmannia glutinosa are not known. Note that it is forbidden for those who are allergic to this product, and should be used with caution by those with allergies.
Rehmannia glutinosa can be soaked in water to drink as tea, but the active ingredient precipitation is very small when the Chinese medicine is soaked in water to drink, it is difficult to achieve the effect of the treatment of disease, if there is discomfort, it is recommended that the hospital, consult a doctor to standardize the treatment, do not take medication without authorization, so as not to cause adverse reactions.