| Studies | Placebo | Racecadotril dose (mg) | Total | ||
| 30 | 100 | 300 | |||
| Baumer | 102 | 0 | 96 | 0 | 198 |
| Vetel | 54 | 59 | 58 | 56 | 227 |
| Hamza | 39 | 0 | 32 | 0 | 71 |
| Coffin | 87 | 0 | 86 | 0 | 173 |
| Total | 282 | 59 | 272 | 56 | 669 |