Four-month-old babies can follow the doctor’s advice to take simethicone oil, which is conducive to promoting intestinal peristalsis and relieving bloating; however, it is necessary to pay attention to avoid excessive consumption of simethicone oil, which may affect the absorption of nutrients. Simethicone oil has the effect of promoting intestinal peristalsis and relieving bloating, when the child has intestinal flatulence, you can be instructed by the doctor to give your child a moderate amount of simethicone oil, which is conducive to promoting the expulsion of intestinal gases, thus alleviating the symptoms of abdominal bloating. Simethicone oil belongs to a very stable surfactant, but each time you eat the simethicone oil can not be completely absorbed, there may be some residue in the intestinal tract, if you eat a lot of simethicone oil for a long period of time, resulting in the intestinal tract in the residue of the simethicone oil is more, which may affect the absorption of nutrients. Therefore, if a four-month-old baby has intestinal flatulence, he or she can use simethicone under the guidance of a doctor. Parents should not use this drug for infants without authorization to avoid unnecessary harm.