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Bioequivalence of Losartan and Hydrochlorothiazide (HCTZ) Combination Tablet and Coadministration of Its Components (0954A-306)

An Open-Label, Randomized, 2-Period Crossover Study to Evaluate the Bioequivalence After Administration of a Losartan 100-mg/Hydrochlorothiazide 12.5-mg Combination Tablet and the Coadministration of a Currently Marketed COZAAR™ 100-mg Tablet and MICROZIDE™ 12.5 mg Capsule in Healthy Adults

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00953680
Enrollment
77
Registered
2009-08-06
Start date
2004-04-30
Completion date
2004-07-31
Last updated
2022-02-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypertension

Brief summary

This study will evaluate the bioequivalence of the losartan/hydrochlorothiazide (HCTZ) combination tablet and coadministration of losartan and hydrochlorothiazide.

Interventions

DRUGlosartan potassium (+) hydrochlorothiazide (HCTZ)

Single dose losartan 100 mg/HCTZ 12.5 mg combination tablet in one of two treatment periods.

DRUGlosartan potassium

Single dose losartan 100 mg tablet in one of two treatment periods.

Single dose HCTZ 12.5 mg capsule in one of two treatment periods.

Sponsors

Organon and Co
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes

Inclusion criteria

* Subject is a healthy male or female between the ages of 18 and 45 years of age * Subject does not smoke

Exclusion criteria

* Subject has a history of any illness that might pose additional risk to participation or confound the results of the study * Subject has a history of hepatitis B or C or significant drug allergies

Design outcomes

Primary

MeasureTime frameDescription
Area Under the Curve (AUC(0 to Infinity)) of Losartan0 to 36 Hours Post Dose
Peak Plasma Concentration (Cmax) for Losartan36 Hours Post DosePeak Plasma Concentration (Cmax), or maximal concentration of drug following dosing.
Area Under the Curve (AUC(0 to Infinity)) of HCTZ0 to 30 Hours Post DosePlasma Area Under the Curve, a measure of drug exposure following dosing
Peak Plasma Concentration (Cmax) of HCTZ Following Single Dose Administration of Losartan/HCTZ or Losartan and HCTZ30 Hours Post DosePeak Plasma Concentration (Cmax), or maximal concentration of drug following dosing

Participant flow

Participants by arm

ArmCount
All Participants
All randomized patients
77
Total77

Withdrawals & dropouts

PeriodReasonFG000FG001
Period 1Withdrawal by Subject01

Baseline characteristics

CharacteristicAll Participants
Age, Continuous33.87 years
Height166.81 Centimeters
Sex: Female, Male
Female
46 Participants
Sex: Female, Male
Male
31 Participants
Weight73.01 kilograms

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
12 / 7610 / 77
serious
Total, serious adverse events
0 / 380 / 39

Outcome results

Primary

Area Under the Curve (AUC(0 to Infinity)) of HCTZ

Plasma Area Under the Curve, a measure of drug exposure following dosing

Time frame: 0 to 30 Hours Post Dose

Population: Pharmacokinetic (PK) results included complete data from 75 of 77 subjects (with 1 replacement). Partial data from 1 subject were not analyzed. Plasma concentrations for another subject were undetectable following 1 treatment, with partial data excluded from analyses.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Losartan-HCTZ Combination TabletArea Under the Curve (AUC(0 to Infinity)) of HCTZ462.08 ng*hr/mLStandard Deviation 144.72
Losartan Tablet + HCTZ CapsuleArea Under the Curve (AUC(0 to Infinity)) of HCTZ499.90 ng*hr/mLStandard Deviation 133.46
Comparison: Least-Squares Mean Ratio (A/B); A= Single dose losartan 100 mg-HCTZ 12.5 mg combination tablet; B= Single dose losartan 100 mg tablet + HCTZ 12.5 mg capsule90% CI: [0.825, 1.035]
Primary

Area Under the Curve (AUC(0 to Infinity)) of Losartan

Time frame: 0 to 36 Hours Post Dose

Population: Pharmacokinetic (PK) results included complete data from 75 of 77 subjects (with 1 replacement). Partial data from 1 subject were not analyzed. Plasma concentrations for another subject were undetectable following 1 treatment, with partial data excluded from analyses.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Losartan-HCTZ Combination TabletArea Under the Curve (AUC(0 to Infinity)) of Losartan1018.1 ng*hr/mLStandard Deviation 382.5
Losartan Tablet + HCTZ CapsuleArea Under the Curve (AUC(0 to Infinity)) of Losartan1024.9 ng*hr/mLStandard Deviation 354.6
Comparison: Least-Squares Mean Ratio (A/B); A= Single dose losartan 100 mg-HCTZ 12.5 mg combination tablet; B= Single dose losartan 100 mg tablet + HCTZ 12.5 mg capsule90% CI: [0.95, 1.039]
Primary

Peak Plasma Concentration (Cmax) for Losartan

Peak Plasma Concentration (Cmax), or maximal concentration of drug following dosing.

Time frame: 36 Hours Post Dose

Population: Pharmacokinetic (PK) results included complete data from 75 of 77 subjects (with 1 replacement). Partial data from 1 subject were not analyzed. Plasma concentrations for another subject were undetectable following 1 treatment, with partial data excluded from analyses.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Losartan-HCTZ Combination TabletPeak Plasma Concentration (Cmax) for Losartan532.7 ng/mLStandard Deviation 334.9
Losartan Tablet + HCTZ CapsulePeak Plasma Concentration (Cmax) for Losartan637.9 ng/mLStandard Deviation 425.3
Comparison: Least-Squares Mean Ratio (A/B); A= Single dose losartan 100 mg-HCTZ 12.5 mg combination tablet; B= Single dose losartan 100-mg tablet + HCTZ 12.5 mg capsule90% CI: [0.749, 0.931]
Primary

Peak Plasma Concentration (Cmax) of HCTZ Following Single Dose Administration of Losartan/HCTZ or Losartan and HCTZ

Peak Plasma Concentration (Cmax), or maximal concentration of drug following dosing

Time frame: 30 Hours Post Dose

Population: Pharmacokinetic (PK) results were based on data from the 20 subjects who had blood drawn for the HCTZ assay. These 20 subjects were selected as the first 10 subjects from each treatment sequence who completed both periods of the study.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Losartan-HCTZ Combination TabletPeak Plasma Concentration (Cmax) of HCTZ Following Single Dose Administration of Losartan/HCTZ or Losartan and HCTZ76.15 ng/mLStandard Deviation 39.55
Losartan Tablet + HCTZ CapsulePeak Plasma Concentration (Cmax) of HCTZ Following Single Dose Administration of Losartan/HCTZ or Losartan and HCTZ81.76 ng/mLStandard Deviation 31.05
Comparison: Least-Squares Mean Ratio (A/B); A= Single dose losartan 100 mg-HCTZ 12.5 mg combination tablet; B= Single dose losartan 100 mg tablet + HCTZ 12.5 mg capsule90% CI: [0.836, 1.037]

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026