| DB00207 | Azithromycin | 1 | Completed | 1 |
| DB14158 | Microcrystalline cellulose | 2 | Not Yet Recruiting | 1 |
| DB18530 | Bifidobacterium spp. | 2 / 3 | Recruiting | 1 |
| DB00130 | L-Glutamine | 2 / 3 | Recruiting | 1 |
| DB15823 | Lactobacillus acidophilus | 2 / 3 | Recruiting | 1 |
| DB16540 | Lactobacillus delbrueckii bulgaricus | 2 / 3 | Recruiting | 1 |
| DB16551 | Lactobacillus paracasei | 3 | Completed | 1 |
| DB16549 | Bifidobacterium breve | 4 | Completed | 1 |
| DB18530 | Bifidobacterium spp. | 4 | Completed | 1 |
| DB18530 | Bifidobacterium spp. | 4 | Recruiting | 1 |
| DB09275 | Bismuth subcitrate potassium | 4 | Enrolling by Invitation | 1 |
| DB00736 | Esomeprazole | 4 | Enrolling by Invitation | 1 |
| DB15823 | Lactobacillus acidophilus | 4 | Completed | 1 |
| DB15823 | Lactobacillus acidophilus | 4 | Recruiting | 1 |
| DB16540 | Lactobacillus delbrueckii bulgaricus | 4 | Completed | 1 |
| DB16540 | Lactobacillus delbrueckii bulgaricus | 4 | Recruiting | 1 |
| DB00916 | Metronidazole | 4 | Enrolling by Invitation | 1 |
| DB00338 | Omeprazole | 4 | Completed | 1 |
| DB00759 | Tetracycline | 4 | Enrolling by Invitation | 1 |
| DB01060 | Amoxicillin | Not Available | Completed | 1 |
| DB00878 | Chlorhexidine | Not Available | Recruiting | 1 |
| DB00916 | Metronidazole | Not Available | Completed | 1 |