Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2001-9-10
pubmed:abstractText
This article reports the results of an open-label, multiple-dose study to determine percutaneous absorption and pharmacokinetics of eflornithine following topical treatment with eflornithine HCl 13.9% cream (Vaniqa). Ten women with excessive facial hair were treated with two 0.5 g single doses of [14C]-labeled eflornithine HCl 13.9% (w/w) cream (periods A and C) separated by twice-daily application of 0.5 g unlabeled eflornithine HCl 13.9% cream for 7 days (period B). Analysis of radioactivity excreted in urine and feces indicated that percutaneous absorption was minimal. Comparison with urinary excretion of eflornithine in period A suggested that most of absorbed eflornithine was excreted in urine without being metabolized. Radioactivity was not detectable in blood or plasma, but eflornithine concentrations were measurable, with peak concentrations of 4.96 ng/ml in period A and 10.44 ng/ml in period C. Eflornithine was eliminated from plasma with a mean terminal half-life of 11 hours (first application) and 8 hours (final application). Trough plasma concentrations reached steady state (4.61-5.50 ng/ml) after 4 days of twice-daily topical treatment, and multiple dosing had no apparent effect on disposition kinetics. The low degree of percutaneous absorption and low systemic exposure to eflornithine offer a favorable clinical safety profile of eflornithine HCl 13.9% cream.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0091-2700
pubmed:author
pubmed:issnType
Print
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
972-8
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Percutaneous absorption and pharmacokinetics of eflornithine HCl 13.9% cream in women with unwanted facial hair.
pubmed:affiliation
Bristol-Myers Squibb, Princeton, New Jersey 08540, USA.
pubmed:publicationType
Journal Article, Clinical Trial