You should not take morpholine when you have diarrhea. Diarrhea is mainly due to the presence of inflammation in the intestinal tract, which causes stimulation of smooth muscles, spasmodic contraction of smooth muscles and accelerated peristalsis. When the intestine is in a hyperactive state during diarrhea, the contents of the intestine will be expelled rapidly. Morpholine is a gastrointestinal motility drug that accelerates gastrointestinal motility. Morpholine can be taken when the gastrointestinal motility is insufficient and can help improve the condition, but it can aggravate the condition when the gastrointestinal motility is hyperactive. When you have diarrhea, mainly drugs that inhibit intestinal peristalsis, such as montelukast, which can not only inhibit intestinal peristalsis, but also adsorb toxic substances released by bacteria and viruses in the intestine, so it can achieve the purpose of quickly stopping diarrhea. Some people have diarrhea related to bacterial infection and need to be treated with antibiotic drugs, such as levofloxacin and amoxicillin.