The taking time of probiotics for 18 months old babies is not fixed, due to different personal constitution and different intestinal environment, so the time of taking probiotics will also be different. Probiotics can enhance intestinal immunity, adjust the internal intestinal flora, can promote intestinal absorption of nutrients, to create a good intestinal environment, taking time is not fixed, most of the 18-month-old babies insist on taking 1 ~ 2 weeks or so, you can see a better effect. 18 months baby probiotics must follow the doctor’s advice on the time to take. In addition, if the baby has intestinal problems, it is recommended to change the diet and go to a specialized children’s hospital, do not simply rely on probiotics only.