These three medicines are actually the same medicine, but they have different names. Weixian Oil is the scientific name of Weixian U in China, commonly known as vitamin complex U tablets. No matter what the name is, the ingredients and functions are the same, and it can relieve the symptoms of stomach discomfort, such as stomach acid, stomachache, abdominal distension, nausea after drunkenness, excessive drinking and so on.

However, Wei Xianyou is a genuine name in China, so you should look for Wei Xianyou when buying in China.