The full name of Gui Zhi Long Bone and Oyster Soup is Gui Zhi Plus Long Bone and Oyster Soup. This formula can be used for premature ejaculation of kidney yang deficiency type. Gui Zhi plus Long Bone and Oyster Soup consists of Gui Zhi Tang plus oyster and dragon bone, which has the effect of harmonizing yin and yang, and subduing and stabilizing the body. Gui Zhi Tang can harmonize Ying and Wei (making the body’s internal and external qi smooth, each in its own way) in order to consolidate the surface, while Long Bone and Oyster can re-calm and tranquilize the mind (using mineral and shellfish medicines to stabilize the mind), and astringent and solidify the astringency (astringent and consolidating). It is mainly used for treating coldness in the nether regions, palpitation (accelerated heartbeat, often accompanied by panic), insomnia, loss of semen in men, dream intercourse in women, spontaneous sweating (involuntary sweating during the daytime, aggravated by sweating with a slight movement), night sweating (sweating abnormally after falling asleep, and sweating stops after waking up), enuresis, premature ejaculation, impotence, and alopecia. Gui Zhi Plus Long Bone and Oyster Soup can treat premature ejaculation of Kidney-Yang deficiency type. The adverse reactions and contraindications of this formula are not known. If necessary, it is recommended to visit a regular hospital for treatment under the diagnosis of a professional physician.