Zuo Gui Wan does not have a specific treatment time, due to individual physical differences, the urgency of the disease, the difference in the ability to absorb the drug, the specific time to take is not the same. Generally, 2-4 weeks as a treatment cycle. Zuo Gui Wan has the function of nourishing Yin and tonifying the kidney (tonifying the true Yin in the kidney), filling the essence and marrow (replenishing the essence and fluid and promoting the development of the bone marrow), and is mainly used for the evidence of spontaneous sweating and night sweating (abnormal sweating after going to sleep, and stopping sweating after waking up) caused by the deficiency of the true Yin (deficiency of the true Yin in the kidney), or the evidence of lumbar and knee soreness and tenderness (feeling of soreness and tenderness in the lumbar and knee areas). Avoid spicy and stimulating food during the period of taking the medicine. It is forbidden for those who are allergic to the medicine, or those with severe insufficiency of liver and kidney functions. This formula is full of nourishing and greasy products, which can easily stagnate the spleen and hinder the stomach, so it should be used with caution for people with spleen deficiency and loose stools; for long-term use, it is advisable to pair it with products that can strengthen the spleen and stomach. The use of Chinese medicine emphasizes on evidence-based treatment, please take it under the guidance of a professional Chinese medicine practitioner. If any discomfort occurs while taking this medicine, please go to the hospital in time to avoid delaying your condition.