Yes, there are currently three authentic Red Bull models on the market, namely Red Bull Vitamin Flavored Drinks, Red Bull Vitamin Functional Drinks and Red Bull Anacin Drinks. Red Bull Vitamin Functional Drinks are produced by Beijing Red Bull Vitamin Sales Co. Ltd. and the manufacturers are Beijing Huairou Factory, Hubei Xianning Factory, Zhongshan Factory and Haikou Factory. Let's start with the flavor. Flavored drinks and functional drinks have basically the same taste. If you don't drink it regularly, the taste difference of Anaijin is a bit big, but overall, the three products taste pretty much the same, just the difference in functionality and flavor ingredients, as well as the difference in fine-tuning by different manufacturers. However, Anagi also adds American ginseng extract, and the main ingredient, taurine, is three times more abundant than the other two. So the addition of American ginseng extract makes the flavor a little bitter and increases the taurine content for a stronger flavor.