Plasma concentrations of gastrointestinal hormones (in pg/ml) before and after administration of sumatriptan in seven healthy volunteers
| Variable | Control | Sumatriptan | p Value |
| Median motilin concentration | 309 (38) | 317 (42) | NS |
| Peak motilin concentration | 393 (46) | 403 (49) | NS |
| Median motilin concentration during MMC cycle | 326 (42) | 316 (44) | NS |
| Motilin concentration associated with phase 3 | 376 (32)* | 213 (23) | 0.009 |
| Median somatostatin concentration | 7.5 (0.9) | 5.6 (0.9) | 0.005 |
| Median somatostatin concentration during MMC cycle | 6.8 (2.2) | 5.3 (1.7) | 0.04 |
Results are expressed as median (SEM). Median hormone concentrations before and after sumatriptan were calculated from respectively 14.3 (1.4) and 11.1 (1.0) samples per subject. The median hormone concentrations during the MMC cycle before and after sumatriptan were calculated from respectively 7.1 (0.8) and 6.4 (1.8) samples per subject. *Significantly different from the motilin level during the MMC cycle before sumatriptan.