16 years old if there is no phenomenon of kidney deficiency, it is not appropriate to take drugs to supplement the kidneys; if there are symptoms of kidney deficiency, you can take drugs to supplement the kidneys under the guidance of a doctor. Commonly used medicines include Zuo Gui Wan, Zhi Bai Di Huang Wan and Yu Gui Wan. 1. Zuo Gui Wan has the effect of nourishing the kidney and tonifying yin. It is used in treating lumbar soreness and knee weakness caused by deficiency of genuine yin, night sweating (abnormal sweating after going to sleep, but sweating stops after waking up), mental fatigue (lack of spirit), and dryness of mouth. Contraindicated for pregnant women and forbidden for children. 2. Zhi Bai Di Huang Wan (知柏地黄丸) has the efficacy of nourishing yin and lowering fire (nourishing yin essence and lowering fire). It is used for hot flashes (a burst of fever), night sweating, dry mouth and sore throat, tinnitus, spermatorrhea, and short and red urine (small amount of urine, dark yellow color) caused by deficiency of yin and fire (deficiency of yin and essence in the body, resulting in hyperactivity of deficiency fire). 3. Right Angelica Pill is used for deficiency of kidney yang (lack of yang energy in the kidneys), failure of fire in the vital organs (weakness of kidney yang in the organism, decrease in the function of warming and promoting the operation of qi and blood) resulting in soreness and coldness of the waist and knees, lack of mental energy, coldness, impotence, spermatorrhea, loose stools, and frequent and clear urination. If there is any discomfort, it is recommended to consult a doctor in time. If you need to use medication, you should go through the doctor’s diagnosis and follow the doctor’s instructions to standardize the treatment.