Si Mo Tang is a proprietary Chinese medicine made from Mu Xiang, Citrus Aurantium, Betel nut, and Ocimum sanctum, which has the effect of subduing Qi, lowering rebellion, eliminating stagnation and relieving pain. It is suitable for infants and children with symptoms such as abdominal distension, abdominal pain, crying and restlessness, anorexia, poor appetite, diarrhea, and constipation caused by stagnant milk and food. This medicine can also be used for elderly people with symptoms of stagnant food stagnation, such as bloating, abdominal pain, constipation, etc. Used after abdominal surgery, this medicine can promote the recovery of gastrointestinal function. This drug is a class A non-prescription drug, for non-surgical use, and can be purchased and used under the guidance of a pharmacist for infants and the elderly as mentioned earlier.