It is recommended to buy domestic brands. Because the domestic formula for the elderly is developed specifically for the characteristics of China's elderly population, while foreign formula may be better than our country in terms of production technology, but the formula is not necessarily suitable for China's elderly population. Choose a brand with high visibility and good reputation It is best to choose the products of well-known enterprises with large scale, good product quality and service quality. Due to the strong technical force of large-scale production enterprises, the product formula design is more scientific and reasonable, the quality control of raw materials is more stringent, the production equipment is advanced, the level of enterprise management is higher, and the quality of products is also guaranteed. High-quality milk powder mixing performance is good, not caked after washing, milky white liquid, milk flavor; and poor quality or low milk content of milk powder, washability is poor, that is, can not be washed off, the milk flavor is light or even tasteless, or flavor flavor; in addition, starch content of the product is high, washed after the paste. Some formulas for the elderly are divided into finer ones, usually according to some characteristics of the elderly. This is the time to choose according to the elderly's own physical condition. Many middle-aged and elderly people are lactose intolerant. After consuming fresh milk or ordinary milk powder, gastrointestinal discomfort such as bloating and diarrhea will occur. There is a milk powder specially prepared for lactose intolerant middle-aged and elderly people, replacing part of the lactose with oligosaccharides to adapt to the intestinal function of middle-aged and elderly people.