Pharmacokinetics and bioavailability of carbetocin after intravenous and intramuscular administration in cows and gilts.

07:00 EST 19th December 2019 | BioPortfolio

Summary of "Pharmacokinetics and bioavailability of carbetocin after intravenous and intramuscular administration in cows and gilts."

The pharmacokinetics of carbetocin, which is used to control postpartum hemorrhage after giving birth, was studied in cows and gilts after a single intravenous (IV) or intramuscular (IM) injection. Blood samples from animals were assessed by oxytocin radioimmunoassay, and then the pharmacokinetic parameters were calculated using a noncompartmental model. For gilts, there was no significant difference between half-life (T ), mean residue time (MRT), and maximum concentration (C ) between IM and IV administration. Conversely, the time to reach the C (T ) and MRT were higher following administration of 350 μg/animal in cows via the IM administration compared with IV. The longest T was 0.85 hr, indicating carbetocin was absorbed and eliminated rapidly in both animal species after administration. The T was similar between cows and gilts following IM administration. Moreover, the C after IM injection was about half that of IV administration in both animals. The bioavailability was more than 80% in cows, suggesting administration via the IM route is efficient. This is in agreement with the longer T in cows after IM administration. However, the IV route is recommended for gilts due to a lower bioavailability (35%) and shorter T after IM administration compared with IV.


Journal Details

This article was published in the following journal.

Name: Journal of veterinary pharmacology and therapeutics
ISSN: 1365-2885


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