Veterinary Drug Handbook (VDH) is the reference veterinarians turn to when they want an independent source of information on the drugs that are used in veterinary medicine today.


Any of several devices used to apply pressure to a horse's upper lip. This is used as a form of acupressure or distraction to calm and immobilize the animal. The use of a twitch produces widely varying results on individual horses. These range from semiconsciousness to rage. Twitches are sometimes applied to the horse's ear.

© 2011-2021 Veterinary Terms, Diagnoses and Drug Handbook Online

Wait 20 seconds...!!!