Exclusion criteria:
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1: Subjects have intestinal organic diseases and other diseases that can cause constipation, such as tumors, inflammatory bowel disease, megacolon, intestinal obstruction, anorectal lesions, parathyroid diseases, diabetes mellitus, etc
2: Constipation caused by taking medications, such as anesthetics, antidepressants, aluminum preparations, calcium channel antagonists, antihistamines, diuretics, etc
3: Within 14 days prior to enrollment, those who have used drugs that promote gastrointestinal dynamics, traditional Chinese medicine for the treatment of constipation and digestive tract microecological preparations (such as those containing probiotics and prebiotics).
4: ALT and AST are 1.5 times higher than the upper limit of normal, and the upper limit of SCR is 1.2 times
5: Suspected or proven history of alcohol or drug abuse
6: Those with allergies, known or suspected allergies to the test drugs and products and their components
7: Combined with serious cardiovascular, respiratory, renal, hematologic, endocrine, neurological and psychiatric and other systemic diseases, which in the opinion of the investigator will affect the trial evaluator
8: Women who are pregnant or preparing to become pregnant and breastfeeding
9: Those who have participated in other drug clinical trials within 3 months before enrollment
10: Other patients who are considered by the investigator to be unsuitable to participate in this clinical trial
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