Effect of 3 doses of promethazine (Prom-1, 1 mg/kg BW; Prom-2, 2 mg/kg BW; and Prom-4, 4 mg/kg BW) compared with normal saline (NS) on the number of episodes of emesis in 8 healthy adult cats sedated with xylazine hydrochloride (0.66 mg/kg BW, IM). Results are presented as means ± standard error of the mean. *P = 0.036, **P = 0.008, compared with control treatment (normal saline).