the dogs were divided into 4 groups , receiving 20 ml of an i.v . injection containing either 0.025 mg/kg fentanyl , 0.625 mg/kg droperidol , 0.25 ml/kg thalamonal ( 0.625 mg/kg droperidol + 0.0125 mg/kg fentanyl ) , or saline .
C0015846
fentanyl
C0117480
droperidol