According to the Chinese Pharmacopoeia, the dosage of Cornus officinalis decoction is 6~12g, in order to avoid adverse reactions, the dosage of this product in water should refer to the dosage stipulated in the Pharmacopoeia. Cornus officinalis is sour and astringent in flavor, slightly warm in nature, belonging to the liver and kidney meridians, with the effect of tonifying the liver and kidney, astringent and fixing the loss. It can be used in treating dizziness, tinnitus, lumbar and knee pain, impotence and spermatorrhea, frequent urination, dysmenorrhea (excessive menstrual flow or dribbling), sweating, internal heat and thirst (internal heat accompanied by excessive eating, drinking and urination). Cornus officinalis is warm and astringent, and should not be used by those who have dampness and heat that cause urinary dripping. The adverse effects of this product are not known. The medicinal effect of Cornus officinalis in water is limited. To achieve the therapeutic effect, it is recommended to take it together with other medicines. If you need to use drugs, should be used under the guidance of a doctor, not blindly self-medication.