IRCT20210817052219N1 IRCT 2021-10-13 Esfahan University of Medical Sciences Colonoscopy preparation and probiotic use on the severity of constipation The effect of colonoscopy preparation and probiotic consumption on the severity of functional constipation of the gastrointestinal tract (functional constipation and irritable bowel syndrome with constipation pattern) 2021-11-20 anticipated 74 Complete https://irct.ir/trial/58354 interventional Randomization: Not randomized, Blinding: Not blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment. 2-3 Functional constipation. Intervention 1: Intervention group: In this group, patients will receive PEG powder before colonoscopy. After colonoscopy, patients receive two bio-flora (lactic acid bacteria) capsules from Tak Gene for 8 weeks a day (after breakfast and after dinner) and will measure the severity of constipation during and after the interventions. Intervention 2: Control group: In this group, patients will receive PEG powder before colonoscopy. Also, these patients will receive two placebo capsules containing starch per day for 8 weeks (after breakfast and after dinner) and the severity of constipation will be measured during and after the interventions. Yes - There is a plan to make this available What will be shared: All data can be shared after people have requested. When: Six months after publishing the results. To whom: Academic researchers Conditions: Scientific uses Where to obtain: Website of the Research Committee of Isfahan University of Medical Sciences How to obtain: Clear request on the site to access the data by the individual and then review the request by the research assistant within 2 weeks and then allow access to the data. Comments: