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===Butorphanol===
 
===Butorphanol===
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Butorphanol may be used to combat mild pain. It is a poor analgesic but has excellent sedative properties, and also acts as a cough suppressant. Butorphanol is licensed for veterinary use, and is a mixed partial agonist; it is an antagnoist at the OP3 receptor and an agonist at the OP2 receptor.
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Butorphanol may be used to combat mild pain. It is a poor analgesic but has excellent sedative properties, and also acts as a cough suppressant. Butorphanol is licensed for veterinary use, and is a mixed partial agonist; it is an antagonist at the OP3 receptor and an agonist at the OP2 receptor.
    
There is an onset time of 15 mins following i/v, i/m or s/c administration, and effects then last for 2-4 hours.
 
There is an onset time of 15 mins following i/v, i/m or s/c administration, and effects then last for 2-4 hours.
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