Bifidobacterium bifidum does not specify whether it should be taken before or after meals, but it is generally recommended to take it after meals to help digestion in the gastrointestinal tract, but also to regulate the distribution of colonies in the gastrointestinal tract, which has a relatively good effect. Bifidobacterium bifidum is an important beneficial intestinal microorganism. As a physiological beneficial bacteria, Bifidobacterium bifidum has many important physiological functions on human health, such as biological barrier, nutritional effect, anti-tumor effect, immune enhancement, improve gastrointestinal function, anti-aging and so on. When taking bifidobacteria, we should also pay attention to the water temperature should not exceed 40℃, so as to avoid the water temperature is too high, resulting in the inactivation of the live bacteria, which can’t play a therapeutic role. In addition, Bifidobacterium bifidum should not be taken together with antibacterial, bismuth and other drugs, such as amoxicillin, bismuth potassium citrate and so on. When taking Bifidobacterium bifidum, it is recommended to follow the doctor’s instructions, if there are adverse reactions such as diarrhea, constipation, etc., it is recommended to consult the doctor in time.