A combination of butorphanol-azaperone-medetomidine was used to immobilize four captive caribou (Rangifer tarandus granti) in Palmer, Alaska, US. The average induction time for this combination was 5:17±2:06 min. Inductions were smooth, and recoveries were excellent. This drug combination may provide an alternative to the use of potent opioids for immobilizing caribou.
