Probiotics are certainly useful for the elderly. Probiotics are mainly used to treat changes in stool, such as diarrhea or constipation. Because its can play a role in regulating the intestinal flora disorder, it has no relationship with age. Whether it is the elderly, adults or children, taking probiotics can play a role in relieving diarrhea and can also be used to regulate constipation. Probiotics have almost no side effects, so you can use probiotic treatment in appropriate amounts according to the drug instructions. The elderly are a special group, if they have serious diarrhea or have very serious gastrointestinal lesions, they need to go to the hospital in a timely manner, not to blindly use medication on their own to avoid delaying their condition.