| Not Yet Recruiting | Evaluation of the Use of a Probiotic Containing Bifidobacterium Breve PRL2020 in Oral Drops in Preventing Side NCT07234448 | Liaquat University of Medical & Health Sciences | N/A |
| Active Not Recruiting | Effects of Saccharomyces Boulardii CNCM I-745 on Antibiotic-Associated Perturbation in Children Treated for Ac NCT07015736 | Eskisehir Osmangazi University | Phase 4 |
| Enrolling By Invitation | Evaluation of Butyrate Effect on Diarrhea NCT06982703 | University of Padova | N/A |
| Completed | The Efficacy of a Probiotic for Antibiotic Associated Gastrointestinal Symptoms NCT05845073 | The Archer-Daniels-Midland Company | N/A |
| Completed | Efficacy and Safety of Sinquanon for Prevention of Antibiotic-associated Diarrhea in Adults NCT05607056 | Neopharm Bulgaria Ltd. | N/A |
| Completed | Mechanisms of Probiotics and Antibiotic-Associated Diarrhea NCT04414722 | Georgetown University | EARLY_Phase 1 |
| Completed | Study of LRG-002 Hard Capsules (Lek d.d., Slovenia) Used in the Prophylaxis of Antibiotic-associated Diarrhea NCT04321460 | Sandoz | Phase 3 |
| Completed | The Impact of Zinc and Probiotics in Preventing Pediatric Antibiotic-Associated Diarrhea in Southern Iran NCT06665503 | Hormozgan University of Medical Sciences | N/A |
| Completed | Metagenomic and Metabolomic Reconstitution of Gut Microbiota After Broad Spectrum Antibiotic Therapy NCT04171466 | Seed Health | N/A |
| Completed | Clinical Study of Fecal Microbiota Transplantation in the Treatment of Antibiotic-associated Diarrhea NCT05990972 | Shanghai 10th People's Hospital | N/A |
| Unknown | L Rhamnosus ATCC 53103 & L Reuteri DSM 29063 Compared With L Rhamnosus ATCC 53103 for Preventing AAD in Childr NCT04277156 | Medical University of Warsaw | N/A |
| Completed | Antibiotic-Associated Diarrhea and the Role of Microorganisms in the Gut NCT04156555 | Singapore General Hospital | Phase 4 |
| Completed | Mechanisms of Preventing Antibiotic-Associated Diarrhea and the Role for Probiotics NCT03755765 | Georgetown University | EARLY_Phase 1 |
| Completed | Antibiotic Prophylaxis in Transurethral Prostate Resection (TURP) and Transurethral Bladder Tumour Resection ( NCT04212403 | Jessa Hospital | N/A |
| Completed | Optimized Perioperative Antibiotic Prophylaxis in Radical Cystectomy NCT03305627 | Insel Gruppe AG, University Hospital Bern | N/A |
| Completed | The Effect of a Multispecies Probiotic on Reducing the Incidence of Antibiotic-associated Diarrhoea in Childre NCT03334604 | Medical University of Warsaw | N/A |
| Unknown | Prevention of Antibiotic-Associated Diarrhoea With Prolardii NCT03256708 | Therabel Pharma SA/NV | N/A |
| Completed | Efficacy and Safety of BB-12 Supplemented Strawberry Yogurt For Healthy Children on Antibiotics NCT03181516 | Georgetown University | Phase 2 |
| Completed | Effect of Lactobacillus Reuteri DSM 17938 to Prevent Antibiotic-associated Diarrhea in Children NCT02765217 | Eskisehir Osmangazi University | Phase 4 |
| Completed | Lactobacillus Reuteri DSM 17938 in the Prevention of Antibiotic-associated Diarrhea in Children: Protocol of a NCT02871908 | Medical University of Warsaw | Phase 4 |
| Unknown | Bacillus Particles Prevent Children Antibiotics Associated Diarrhea NCT02993419 | Jiangsu Famous Medical Technology Co., Ltd. | Phase 4 |
| Terminated | Effect of a Fresh Fermented Dairy Drink Product Consumption on Antibiotic Associated Diarrhea and Gastro-Intes NCT02900196 | Danone Global Research & Innovation Center | N/A |
| Unknown | Use of a Dietary Supplement to Support Digestive Health in Children With Chronic Diarrhea NCT02856386 | LiveLeaf Inc. | N/A |
| Completed | Efficacy of a Probiotic Product in Children With Antibiotic-associated Gastrointestinal Disorders NCT02722993 | Probi AB | N/A |
| Completed | Clinical Pilot Trial on the Effect of a Probiotic Fermented Drink on Antibiotic-associated Diarrhea (AAD) NCT02746198 | Clinical Research Center Kiel GmbH | N/A |
| Recruiting | Rescue Fecal Microbiota Transplantation for National Refractory Intestinal Infections NCT03895593 | The Second Hospital of Nanjing Medical University | — |
| Completed | Probiotics to Prevent Severe Pneumonia and Endotracheal Colonization Trial NCT02462590 | McMaster University | Phase 4 |
| Terminated | Study of Bio-K+® in the Reduction of the Risk of Clostridium Difficile Infection and Antibiotic Associated Dia NCT01972932 | Bio-K Plus International Inc. | Phase 4 |
| Completed | Probiotics: Prevention of Severe Pneumonia and Endotracheal Colonization Trial (PROSPECT): A Feasibility Clini NCT01782755 | McMaster University | Phase 2 |
| Completed | Effect of a Lacidofil® STRONG in Healthy Adults Taking Antibiotic Treatment NCT01941160 | KGK Science Inc. | Phase 1 / Phase 2 |
| Completed | Probiotic Lactobacillus Reuteri to Prevent Antibiotic-associated Diarrhea and Clostridium Difficile-related In NCT01295918 | St Marina University Hospital, Varna, Bulgaria | Phase 3 |
| Terminated | Probiotic Saccharomyces Boulardii for the Prevention of Antibiotic-associated Diarrhoea NCT01143272 | Bernhard Nocht Institute for Tropical Medicine | Phase 3 |
| Completed | Lactobacillus Reuteri in the Prevention of Antibiotic Associated-diarrhea and Clostridium Difficile NCT02127814 | Case Western Reserve University | N/A |
| Completed | Dose Response Effect of Probiotics for the Prevention of Antibiotic-associated Diarrhea in Chinese Adults NCT01143623 | Changhai Hospital | Phase 2 / Phase 3 |
| Completed | Effect of Lactobacillus Probiotic on Healthy Adults NCT00748748 | Fargo VA Medical Center | Phase 1 |
| Unknown | Comparison of Two Formulations of Bio-K NCT00792844 | McMaster University | N/A |
| Completed | Efficacy and Safety Study in the Prevention of Antibiotic-Associated Diarrhea (AAD) and Clostridium Difficile- NCT00958308 | Bio-K Plus International Inc. | Phase 3 |
| Completed | Preventing Childhood Antibiotic-associated Diarrhea by Prebiotics NCT00826137 | Soroka University Medical Center | Phase 3 |
| Completed | Probiotics For The Prevention of Antibiotics Associated Diarrhea in the Pediatric Intensive Care Unit NCT06109740 | University of South Alabama | N/A |
| Unknown | Ultrasound Diagnosis of Antibiotic Associated Diarrhea NCT00658151 | Shaare Zedek Medical Center | — |
| Completed | Probiotics for Prevention of Antibiotic-associated Diarrhea NCT00641199 | University of Saskatchewan | N/A |
| Suspended | Efficacy of Loperamide for C. Difficile Colitis and Other Diarrheal Diseases Associated With Antibiotic Therap NCT00591357 | Michael E. DeBakey VA Medical Center | Phase 4 |
| Completed | Probiotics at the Treatment of Antibiotic Associated Diarrhea NCT00700557 | Federal University of Uberlandia | Phase 4 |
| Completed | A Study of the Absorption of GT267-004 in Patients With Clostridium Difficile-Associated Diarrhea NCT00382304 | Genzyme, a Sanofi Company | Phase 2 |
| Completed | Efficacy of Metronidazole Versus Metronidazole and Rifampin in CDAD Treatment NCT00182429 | McMaster University | Phase 3 |
| Completed | A Study of GT160-246 Versus Vancomycin in Patients With Clostridium Difficile-Associated Diarrhea NCT00034294 | Genzyme, a Sanofi Company | Phase 2 |
| Withdrawn | Probiotics in Hospitalized Patients Study NCT01596153 | South Shore Hospital | N/A |