Phenylbutazone (Bute)

Overview

Phenylbutazone (Bute) is one of the most common medications administered to polo horses, most often used for the treatment of lameness to relieve pain.

Phenylbutazone (Bute) is an analgesic and anti-inflammatory medication, classified as a non-steroidal anti-inflammatory drug (NSAIDS) available in a variety of preparations:

• tablets,
• oral paste syringes,
• injectable vials,
• and oral powder.

Administration

All medications must be given only as directed by a veterinarian. Oral products are the most common form of administering Bute using an oral syringe into the back of the horse's mouth.

Human Health Risks

Humans should not inhale the powder or ingest Bute. Wash hands immediately after administering Bute. In humans, bone marrow, renal, cardiovascular and gastrointestinal side effects are associated with use of Phenylbutazone.