According to the instructions for use, there is no contraindication to the use of drugs between Zuo Gui Wan and Lock Yang Solid Essence Pill, so they can be taken together under normal circumstances. It can be clinically used for the treatment of deficiency of genuine yin, lumbago and knee weakness, night sweating (abnormal sweating after going to sleep and stopping sweating after waking up), mental fatigue (lack of spirit) and dryness of mouth. The drug is forbidden for pregnant women and children. In addition, it should not be taken by patients with colds. 2. Lock-Yang Essence-Fixing Pill is composed of Lock-Yang, Cistanches, Morinda Citrifolia, Boneset, Semen Cuscutae, Cortex Eucommiae, Aniseed and so on, which has the efficacy of warming the kidneys and fixing essence. It can be used clinically for conditions such as lumbar and knee soreness (a feeling of soreness and weakness in the waist and knees), dizziness and tinnitus, spermatorrhea and premature ejaculation caused by deficiency of kidney yang (lack of yang energy in the kidneys). The drug should not be taken by patients with cold and fever, while abstinence from sexual intercourse during treatment is advisable. To summarize, Zuo Gui Wan and Lock Yang Solid Semen Pill can be used together under normal circumstances. If necessary, it is recommended to go to a regular hospital for treatment under the guidance of a professional physician.