How long it takes to improve kidney yin deficiency with herbs depends mainly on the severity of the symptoms. If the symptoms of kidney yin deficiency are not serious, it usually takes 2~4 weeks for the symptoms to be significantly relieved. However, if the symptoms of kidney yin deficiency are more serious it will take 3~6 months to get improvement. Kidney yin deficiency mainly refers to insufficient yin fluid in the kidneys, which is commonly caused by prolonged illnesses that injure the kidneys, congenital insufficiency, overdoing of sexual intercourse, or excessive consumption of ingredients and medicines with warm and hot properties. Patients may manifest symptoms such as lumbago and pain, spermatorrhea, scanty menstruation, dizziness and tinnitus. Generally, the symptoms are not serious, i.e., the above symptoms do not affect normal life, or the impact is small, after taking drugs that nourish kidney yin, the symptoms can be relieved in about 2~4 weeks. However, if the symptoms are severe, it will take 3~6 months to improve. The exact time depends on the patient’s condition and constitution. For patients with kidney yin deficiency, the use of traditional Chinese medicine must be under the guidance of the doctor’s diagnosis, according to the different symptoms and signs of drug treatment. It is not advisable to self-medicate to avoid adverse reactions. When you are not feeling well, you should consult a doctor in time to avoid delaying your condition.