There is no such thing as what to take to replenish the kidneys. Kidney deficiency is usually caused by kidney yin deficiency, kidney yang deficiency, yin and yang deficiency, etc. You can follow the doctor’s instructions to take medicines such as Six-flavored Digoxin Pill, Jisheng Kidney Qi Pill and Wu Zi Diffractive Pill to regulate the kidneys. 1. Kidney yin deficiency: Clinical manifestations include lumbar and knee soreness and weakness, dizziness and tinnitus, insomnia and dreaminess, etc., which can be regulated with medicines such as Liu Wei Di Huang Wan and Zhi Bai Di Huang Wan. 2. Kidney yang deficiency: Clinical manifestations include soreness and weakness of the waist and knees, oedema of the lower limbs, long and clear urination, etc. Men may have impotence and premature ejaculation, and women may have infertility with uterine cold, so they can take medicines such as Jisheng Kidney Qi Pill and Right Angelica Pill to warm up the kidney yang (warming up and replenishing the yang qi of the kidneys). 3. Yin and Yang deficiency: Clinical manifestations include shortness of breath and spontaneous sweating (involuntary sweating during the day, aggravated by sweating when moving a little), tiredness and weakness, frequent and long urination, etc. Yin and Yang tonic medicines such as Wu Zi Diffractive Zong Pills can be taken to regulate the condition. Specific drugs should be taken under the guidance of a doctor to avoid adverse reactions to self-medication.