There were pills inside- big pills, looked almost like horse tranquilizers.

Krisztina discovers this and tries to shoot Lugo, but Doorbal injects her with a horse tranquilizer.

During a November 20, 1973 concert by The Who, their drummer Keith Moon, passed out from an overdose of horse tranquilizers.

The name appears to be a portmanteau of Equus (Horse) and Nox (Night), which suggests that the drug is a horse tranquilizer.

Its legitimate use was as a horse tranquilizer.

"Superhuman strength, as you call it, is often associated with cocaine or PCP--which is a horse tranquilizer."

Valentine hated to do it, but he took out the horse tranquilizer.

A lead-hooved horse hopped up on horse tranquilizers, actually.

Then, when they walk away empty-handed, they rush to their limo to score a horse tranquilizer.

Clearly the Demosedan, a horse tranquilizer, wasn't enough to do the job.