It is a Chinese medicine made of male Quercus serrata pupa, Serratia marcescens, Hylocereus, Radix Rehmanniae Praeparata, Epimedium brevicornum (goat's fat system), Fructus Lycii, which has the effect of warming up the kidney and assisting the yang, and generating the essence of the marrow, and it is used for those who suffer from the deficiency of the kidney yang and the decline of the kidney yang. It is recommended to take orally after meals, once 2 capsules, 2 times a day. I hope it can help you