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Clinical pharmacology and pharmacokinetics of clonidine
Author(s) -
Dollery C. T.,
Davies D. S.,
Draffan G. H.,
Dargie H. J.,
Dean C. R.,
Reid J. L.,
Clare R. A.,
Murray S.
Publication year - 1976
Publication title -
clinical pharmacology and therapeutics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.941
H-Index - 188
eISSN - 1532-6535
pISSN - 0009-9236
DOI - 10.1002/cpt197619111
Subject(s) - clonidine , sedation , heart rate , blood pressure , pharmacokinetics , anesthesia , medicine , pharmacology
A 300‐µg oral dose of clonidine was administered to 5 normal volunteers and measurements of plasma concentration and effects upon blood pressure, heart rate, circulatory reflexes, sedation, and dry mouth were made for the following 8 hr. The plasma concentration rose to a peak of 1.02 ± 0.52 ng/ml (SD) at 90 min andfell with a mean half‐life of 12.7 hr. Blood pressure of the group fell from 111.0/77.0 to 87.2/60.4 after 3 hr and was 95.2/62.2 mm Hg at 8 hr. Heart rate in recumbency was slowed. Marked sedation and a fall in sativary flow followed the same time‐course as the plasma concentration. The cold pressor response was reduced but the Valsalva overshoot was tiftle affected.