Document Detail


Quinapril and its metabolite quinaprilat in human milk.
MedLine Citation:
PMID:  11422007     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIMS: To measure the milk to plasma ratio (M/P) of quinapril and its active metabolite quinaprilat in lactating mothers and to assess likely infant exposure. METHODS: A single dose of quinapril 20 mg was administered to six healthy mothers who had been breastfeeding their infants for at least 2 weeks. Blood was sampled for the measurement of quinapril and quinaprilat at 0, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16 and 24 h. Milk was collected for measurement of quinapril and quinaprilat concentrations over the periods -4-0, 0-4, 4-8, 8-12, 12-18, 18-24 h. The areas under the plasma and milk concentration-time curves were estimated and an M/P ratio derived for both quinapril and quinaprilat. RESULTS: The M/P ratio for quinapril was 0.12 (95% CI 0.09,0.14). No quinapril was detected in milk after 4 h. No quinaprilat was detected in any of the milk samples. The estimated 'dose' of quinapril that would be received by the infant was 1.6% (95% CI 1.0,2.2) of the maternal dose, adjusted for respective weights. CONCLUSIONS: Quinapril appears to be 'safe' during breastfeeding according to conventional criteria, although as always, the risk:benefit ratio should be considered when it is to be given to a nursing mother.
Authors:
E J Begg; R A Robson; S J Gardiner; L J Hudson; P A Reece; S C Olson; E L Posvar; A J Sedman
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Publication Detail:
Type:  Clinical Trial; Controlled Clinical Trial; Journal Article    
Journal Detail:
Title:  British journal of clinical pharmacology     Volume:  51     ISSN:  0306-5251     ISO Abbreviation:  Br J Clin Pharmacol     Publication Date:  2001 May 
Date Detail:
Created Date:  2001-06-25     Completed Date:  2001-08-02     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  7503323     Medline TA:  Br J Clin Pharmacol     Country:  England    
Other Details:
Languages:  eng     Pagination:  478-81     Citation Subset:  IM    
Affiliation:
Department of Clinical Pharmacology, Christchurch School of Medicine, New Zealand. evan.begg@chmeds.ac.nz
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Angiotensin-Converting Enzyme Inhibitors / metabolism,  pharmacokinetics
Breast Feeding
Female
Humans
Isoquinolines / blood,  metabolism,  pharmacokinetics*
Middle Aged
Milk, Human / chemistry,  metabolism*
Tetrahydroisoquinolines*
Chemical
Reg. No./Substance:
0/Angiotensin-Converting Enzyme Inhibitors; 0/Isoquinolines; 0/Tetrahydroisoquinolines; 82586-55-8/quinapril; 82768-85-2/quinaprilat
Comments/Corrections

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