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Pharmacokinetics of rilmenidine.

Abstract
Rilmenidine, an alpha 2-adrenoceptor agonist, was studied (1 mg single dose) in order to determine the effects of pathology on its basic pharmacokinetic parameters. Because of the mainly renal elimination of rilmenidine, studies involved hypertensive, elderly hypertensive, renal insufficient and hepatic insufficient patients. Hypertension was found to influence neither the absorption, the distribution nor the elimination processes; the linearity in the range of 1 to 2 mg and the absence of accumulation in long-term treatment were confirmed. In contrast, in the elderly, the absorption phase was delayed. The slight decrease in the apparent volume of distribution (-12%), with a notable decrease in the apparent total clearance (-50%) led to a prolonged elimination half-life (+50%). In renal failure, linear relations between the degree of renal impairment and the elimination parameters were shown. These relations allow the evaluation of the predicted steady-state level of rilmenidine for a given degree of renal failure. In hepatic insufficiency, the modification of rilmenidine disposition concerned exclusively the elimination phase in which apparent clearance was decreased approximately 20%. In conclusion, these results lead to a decreased dosage regimen in patients with severe renal failure.
AuthorsE Singlas, J D Ehrhardt, P Zech, N Pozet, P Genissel
JournalThe American journal of cardiology (Am J Cardiol) Vol. 61 Issue 7 Pg. 54D-59D (Feb 24 1988) ISSN: 0002-9149 [Print] United States
PMID2894159 (Publication Type: Journal Article)
Chemical References
  • Adrenergic beta-Agonists
  • Oxazoles
  • Rilmenidine
Topics
  • Absorption
  • Administration, Oral
  • Adrenergic beta-Agonists (administration & dosage, pharmacokinetics)
  • Adult
  • Aged
  • Aged, 80 and over
  • Female
  • Humans
  • Hypertension (metabolism)
  • Kidney Failure, Chronic (metabolism)
  • Liver Diseases (metabolism)
  • Male
  • Middle Aged
  • Oxazoles (administration & dosage, pharmacokinetics)
  • Rilmenidine

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