Mean number of retained radio-opaque markers after active drug and placebo for markers ingested at various times before the radiograph
| Hours before the radiograph | R093877 (1 mg) | Placebo | R093877 (2 mg) | Placebo |
| 60 | 0.1 | 0.6 | 2.4 | 1.2 |
| 48 | 1.6 | 3.1 | 3.8 | 3.4 |
| 36 | 1.8 | 4.8 | 4.3 | 7 |
| 24 | 5.3 | 6.1 | 6.1 | 7.9 |
| 12 | 8.5 | 8.3 | 8.4 | 8.4 |