1. Tonifying kidney and nourishing blood: Radix Rehmanniae Preparata has the effects of nourishing yin and kidney, nourishing blood and stopping bleeding, and can relieve dizziness, soreness of waist and knees, insomnia and other symptoms caused by kidney deficiency.
2. Clearing away heat and reducing fire: Rehmannia glutinosa has the functions of clearing away heat and toxic materials and reducing fire, which can relieve symptoms such as dry mouth and thirst, sore throat and oral ulcer.
3. Regulating heart function: Rehmannia glutinosa can inhibit myocardial contraction, reduce heart rate, regulate heart function, and prevent and treat cardiovascular diseases.
4. Promoting immune function: Radix Rehmanniae Preparata has the functions of antioxidation, anti-inflammation and enhancing immunity, which can improve the body's resistance and prevent and treat various infectious diseases.
Rehmannia glutinosa is mainly used to treat kidney deficiency, insomnia, neurasthenia, cardiovascular diseases, high fever, oral ulcer and other diseases. It is mostly used in traditional Chinese medicine prescriptions, and can also be decocted or brewed separately. However, it should be noted that pregnant women, lactating women and people with diarrhea and spleen and stomach weakness should use it with caution.