The effect of Chinese herbal medicine generally lasts for about 8 hours to 24 hours after stopping the medicine. If there is any discomfort, please consult a doctor in time and follow the doctor’s instructions after diagnosis and identification, and it is not recommended to stop taking the medicine arbitrarily. Herbal formulas are complexes of multiple active ingredients, which are metabolized at different rates in the body, so it is difficult to give an accurate answer as to how long the effect lasts. According to the frequency of taking Chinese herbal medicine formulas, such as 3 times a day, 2 times a day, 1 time a day, etc., the efficacy of Chinese herbal medicine can be maintained for about 8 hours to 24 hours. Herbal medicines should not be taken more than once for a short period of time because the medicines need to maintain a certain concentration of medicines in the body to exert their therapeutic effects, and taking them more than once for a short period of time will cause the concentration of medicines in the body to be too high, which may cause adverse reactions. The medication should be taken under the guidance of a physician and in strict accordance with medical advice, and should not be taken without authorization.