| Test drugs | Dose | From |
| Zynamite® | 25 mg/kg | Nektium Pharma S.L. |
| Zynamite® + Caffeine EP USP Natural Anhydrous | 25 mg/kg + 0.25 mg/kg | Nektium Pharma S.L. |
| Zynamite® + Caffeine EP USP Natural Anhydrous | 25 mg/kg + 0.50 mg/kg | Nektium Pharma S.L. |
| Caffeine EP USP Natural Anhydrous | 0.5 mg/kg | Nektium Pharma S.L. |
| VEHICLE 0.9% NaCl | 1.0 ml/kg | Braun Melsungen |