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Pharmacokinetics of Famciclovir in Subjects with Chronic Hepatic Disease
Author(s) -
Boike Steven C.,
Pue Martin,
Audet Patricia R.,
Freed Martin I.,
Fairless Amanda,
Ilson Bernard E.,
Zariffa Névine,
Jorkasky Diane K.
Publication year - 1994
Publication title -
the journal of clinical pharmacology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 116
eISSN - 1552-4604
pISSN - 0091-2700
DOI - 10.1002/j.1552-4604.1994.tb04732.x
Subject(s) - medicine , pharmacokinetics , famciclovir , chronic hepatic , pharmacology , disease , immunology , virus
The pharmacokinetic profile of penciclovir was determined after a single 500‐mg dose of its oral precursor, famciclovir, in 9 healthy volunteers and in 14 patients with chronic hepatic disease. Plasma and urine samples were analyzed for concentrations of penciclovir and 6‐deoxy‐penciclovir using a reverse‐phase high‐performance liquid chromatography (HPLC) method. Famciclovir was not quantifiable in patients with hepatic disease, and 6‐deoxy‐penciclovir was quantifiable in only a limited number of specimens. The extent of systemic availability of penciclovir, as measured by AUC 0‐∞ , was similar in patients with hepatic disease and in healthy subjects. In contrast, C max was significantly lower (average decrease of 43%) in subjects with hepatic disease relative to healthy normal subjects. Median T max for subjects with hepatic disease was significantly increased (by 0.75 hours) compared with subjects with normal liver function. These data suggest a decrease in the rate, but not the extent, of systemic availability of penciclovir in patients with hepatic disease. It should be unnecessary to modify the dose of famciclovir for subjects with compensated hepatic disease and normal renal function.