There is no clear clinical data on how long it takes to cure a serious case of Spleen and Kidney Yang Deficiency (deficiency of yang qi in the spleen and kidneys), as it varies from person to person depending on the condition, and the length of treatment needs to be decided by the physician. In Chinese medicine, it is believed that if there is spleen and kidney yang deficiency, not only will there be the general symptoms of yang deficiency, such as coldness (fear of cold, cold extremities), 晄white color, long and frequent urination, loose stools, etc., but there will also be a loss of appetite, dyspepsia, hidden pain in the abdomen, lumbar and knee soreness (feeling of soreness and weakness in the lumbar region and knees), uterine cold infertility, impotence and premature ejaculation and other manifestations of the dysfunctions of the spleen and kidneys. For this syndrome, commonly used therapeutic medicines include Radix Rehmanniae Pill, Si Shen Pill, and Jin Gui Ren Qi Pill. However, the length of treatment needs to be decided by the physician according to the condition. It is recommended to consult your doctor for specific medication.