Pharmacokinetic Behavior of Meloxicam in Loggerhead Sea Turtles (Caretta caretta) after Intramuscular and Intravenous Administration

2015 
Abstract Data on reptile analgesia are scarce for nonsteroidal anti-inflammatory drugs (NSAIDs) and opioids and almost completely lacking in sea turtles, even though emergencies requiring correct pain management are very frequent in their rehabilitative medicine; therefore, dosage regimens extrapolated from other species involve the risk of clinical failure and damage to the animals. We describe the pharmacokinetic behavior of meloxicam in the loggerhead sea turtle (Caretta caretta). We chose meloxicam because of its selective anti-cyclooxygenase-2 activity and lesser adverse side effects. No data are available on the capacity of turtles to tolerate NSAIDs, so we chose a dose of 0.1 mg/kg of meloxicam. Plasma concentrations of meloxicam were unexpectedly low both for intravenous (IV; maximum concentration [Cmax] = 0.04±0.02 µg/mL) and intramuscular (IM; Cmax = 0.07±0.09 µg/mL) administration. A double-peak phenomenon occurred after both IV (time for second peak concentration Tmax2 = 10.33±10.89 h) and IM ...
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