Hello, among the three substances mentioned above, Guifu Dihuang Pill and Jinkui Shenqi Pill are different names of the same medicine, which play the role of warming and tonifying kidney yang, and Gui You Pill is also a medicine for warming and tonifying kidney yang. These two kinds of Chinese patent medicines are similar in composition, curative effect and relative side effects. Therefore, there is no obvious difference in treatment. At the same time, as the treatment of warming and tonifying kidney yang, we must first make it clear that kidney yang deficiency is edible. Compared with your above situation, it is best to analyze whether there is a typical cold feature of limbs caused by kidney-yang deficiency. Then it is effective to take Chinese patent medicines that warm and tonify kidney yang and regulate warming and tonify. Generally, according to the course of treatment, it takes more than two or three months to get obvious results. ; Therefore, I suggest that you combine your own actual analysis and choose a drug that is convenient to take and has little discomfort in the gastrointestinal tract. I wish you health and happiness!