Irbesartan/Hydrochlorothiazide : in moderate to severe hypertension.

* The fixed-dose combination of irbesartan/hydrochlorothiazide (HCTZ) is approved in the US for use as initial therapy in patients who are likely to need multiple agents to achieve their blood pressure (BP) goals. * In a 12-week, randomized, double-blind, multicentre trial in 538 patients with moderate hypertension that was untreated or uncontrolled by monotherapy, the mean reduction from baseline in seated systolic BP (SeSBP) at week 8 (primary endpoint) was significantly greater with irbesartan/HCTZ than with either irbesartan or HCTZ as monotherapy. * In addition, the proportion of patients with moderate hypertension achieving controlled BP (SeSBP < 140 mmHg/seated diastolic BP [SeDBP] < 90 mmHg) at 12 weeks was significantly greater with irbesartan/HCTZ combination therapy than with irbesartan or HCTZ monotherapy. * In a 7-week, randomized, double-blind, multicentre trial in 697 patients with severe hypertension that was untreated or uncontrolled by monotherapy, a significantly greater proportion achieved a trough SeDBP of < 90 mmHg following 5 weeks of combination therapy with irbesartan/HCTZ compared with irbesartan monotherapy (primary endpoint). * Furthermore, the proportion of patients with severe hypertension achieving controlled BP of < 140/90 mmHg was significantly greater at all timepoints of the trial compared with irbesartan monotherapy. * Irbesartan/HCTZ combination therapy had a similar tolerability profile to irbesartan and HCTZ monotherapy. Most adverse events were of mild to moderate intensity.
AuthorsJamie D Croxtall, Gillian M Keating
JournalDrugs (Drugs) Vol. 68 Issue 10 Pg. 1465-72 ( 2008) ISSN: 0012-6667 [Print] New Zealand
PMID18578561 (Publication Type: Journal Article)
Chemical References
  • Antihypertensive Agents
  • Biphenyl Compounds
  • Drug Combinations
  • Tetrazoles
  • Hydrochlorothiazide
  • irbesartan
  • Antihypertensive Agents (administration & dosage, adverse effects, pharmacokinetics)
  • Biphenyl Compounds (administration & dosage, pharmacokinetics, therapeutic use)
  • Clinical Trials as Topic
  • Drug Combinations
  • Humans
  • Hydrochlorothiazide (administration & dosage, adverse effects, pharmacokinetics)
  • Hypertension (drug therapy)
  • Severity of Illness Index
  • Tetrazoles (administration & dosage, pharmacokinetics, therapeutic use)

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