Document Detail

Methadone in healthy goats - Pharmacokinetics, behaviour and blood pressure.
MedLine Citation:
PMID:  23540608     Owner:  NLM     Status:  Publisher    
The pharmacokinetics and effects of the opioid methadone on behaviour, arterial blood pressure, heart rate and haematocrit were studied in goats. Two goats received methadone (0.2mg/kg) intravenously and the terminal half-life was 88 and 91min, the volume of distribution 8.4 and 6.1L/kg, and clearance 86 and 123mL/min/kg. In a crossover study eight goats received methadone (0.6mg/kg) or 0.15M NaCl subcutaneously (SC). After SC administration bioavailability was complete and the terminal half-life was 215±84min (mean±SD), Tmax 31±15min and Cmax 45±11ng/mL. Blood pressure and haematocrit increased while heart rate did not change. The goats did not ruminate and they climbed, scratched, gnawed and showed tail-flicking after SC methadone in contrast to NaCl administration. The use of methadone in goats may be restricted due to the inhibition of rumination and the rather short half-life.
L Olsén; K Olsson; E Hydbring-Sandberg; U Bondesson; C Ingvast-Larsson
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-3-26
Journal Detail:
Title:  Research in veterinary science     Volume:  -     ISSN:  1532-2661     ISO Abbreviation:  Res. Vet. Sci.     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-4-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401300     Medline TA:  Res Vet Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2013 Elsevier Ltd. All rights reserved.
Division of Pharmacology and Toxicology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden. Electronic address:
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