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Butorphanol Injection

Butordyne® Injection consists of butorphanol (as butorphanol tartrate), and is a totally synthetic, centrally acting, narcotic (opioid) agonist–antagonist analgesic with potent antitussive activity. Butorphanol has activity at the κ  receptor as a partial agonist and at at the μ receptor as an antagonist.

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Technical Information

Active Constituent(s)

10 mg/mL Butorphanol as butorphanol tartrate


Analgesic and sedative for use in horses, dogs and cats. In cats, sedation does not occur with Butordyne® Injection alone, but can occur in dogs with Butordyne® Injection alone. Butordyne® Injection may be used in combination with medetomidine hydrochloride and ketamine hydrochloride as a triple anaesthetic in dogs and cats


Dog Cat Horse
Analgesia 0.2-0.3 mg/kg SC/IM/IV 0.4 mg/kg SC/IM 0.1 mg/kg IV
Sedation 0.1 mg/kg* IM/IV 0.4 mg/kg* SC/IM
Premedication 0.1-0.2 mg/kg SC/IM/IV 0.4 mg/kg SC/IM

*Doses used in combination with medetomidine hydrochloride

Withholding Period(s)

NOT TO BE USED in horses intended for human consumption.

Product Codes

Size Code
10 mL 504270
50 mL 520355