Back to Analgesics
It has some activity at the mu receptor which gives it a longer duration of analgesic action.
Buprenorphine is considered to be approximately 30 times stronger than morphine. However, morphine is a much stronger pain reliever due to the fact that morphine has more activity at the mu receptor.
Respiratory depression, decreased heart rate, and blood pressure are possible with this drug.
It is well absorbed IM, and SQ, and is metabolized in the liver. In rats, the drug concentrates in the liver, brain, gastrointestinal tract and placenta. It is then excreted in urine, and via breast milk. It is therefore not recommended that it be given to pregnant or lactating rats.
The duration of action may last from 8 to 12 hours.
There is no evidence at this time of teratogenicity.
Compatible drugs are acepromazine, atropine, diphenhydramine, droperidol, glycopyrolate, hydroxyzine, scopolamine, and xylazine.
If used with other central nervous system depressants such as anesthetic agents, antihistamines, phenothiazines, barbiturates and tranquilizers, may increase central nervous system and respiratory depression.
It is not recommended to give with MAO inhibitors.
Use with caution in respiratory compromise and impaired liver or renal function.
Respiratory: decreased respiratory rate
GI: pica, constipation
GU: urinary retention
In the event there are signs of overdose such as cardiac and respiratory depression administer the following:
0.05 mg/kg to 0.1 mg/kg , SQ , q6hrs to q12hrs 2
See also Rat Analgesics.3
Be sure to instruct pet owners to monitor for this behavior if an opioid medication is given, and to contact vet immediately. Also have the pet owner remove the rat from any bedding source that might be chewed and ingested until medication has passed through the system. In severe cases it may be necessary to reduce or eliminate the drug from the rat’s system by providing warmed SQ or IV fluids. 21
It is also important to be aware that pica may be observed, in rats, where pain has not been adequately addressed.
Posted on June 23, 2003, 14:44,
Last updated on July 15, 2010, 13:27