Men with kidney deficiency can tonify their kidneys by taking herbs that tonify the kidneys and fill up the essence (replenish the kidney essence), such as Kidney Qi Pills and Zuo Gui Pills. There is no such thing as what is the fastest and best tonic to take. Kidney qi pill, has the effect of tonifying the kidney and assisting yang. It is mainly used for treating deficiency of kidney yang (lack of yang energy in the kidneys). Symptoms of waist pain and foot weakness, body half below the cold feeling, abdominal constriction (small abdominal traction discomfort), urinary unfavorable (urination is not smooth), or urinary counterparts, especially at night, impotence and premature ejaculation, and so on. It is not suitable for those who have normal urination despite deficiency of kidney yang. Zuo Gui Wan, with the effect of nourishing the kidney and tonifying yin. It is used for lumbago and knee weakness caused by deficiency of true yin, night sweating (abnormal sweating after going to sleep and stopping sweating after waking up), fatigue (lack of spirit) and dryness of mouth. Contraindicated for pregnant women and forbidden for children. If there is any discomfort, it is recommended to consult a doctor. If medication is needed, it should be identified by a doctor and follow the doctor’s instructions for standardized treatment.