Efficacy and Safety of a Quadruple Ultra-low-dose Treatment for Hypertension
Public ClinicalTrials.gov record NCT03640312. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Double Blind Randomized Controlled Trial to Assess the Efficacy and Safety of a Quadruple Ultra-low-dose Treatment for Hypertension (QUARTET USA)
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
To investigate, in a double-blind randomized controlled trial, whether initiating treatment with ultra-low-dose quadruple-combination therapy ("LDQT") will lower office blood pressure more effectively, and with fewer side effects, compared to initiating standard dose monotherapy as per current guidelines in patients with hypertension. Primary hypothesis: A combination pill comprising four types of blood pressure lowering medications, each at one-quarter standard doses, will lower office blood pressure more effectively than initiating patients with standard dose monotherapy as per contemporary clinical practice guideline recommendations.
Study identification
- NCT ID
- NCT03640312
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 62 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Aug 29, 2019
- Primary completion
- May 30, 2022
- Completion
- Jul 30, 2024
- Last update posted
- Jan 2, 2025
2019 – 2024
United States locations
- U.S. sites
- 2
- U.S. states
- 1
- U.S. cities
- 2
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| ACCESS Martin T. Russo Family Health Center | Bloomingdale | Illinois | 60108 | — |
| Ashland Family Health Center | Chicago | Illinois | 60609 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03640312, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jan 2, 2025 · Synced Sep 7, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03640312 live on ClinicalTrials.gov.