Nitrate supplementation effects on blood pressure in resistant hypertension patients
Official title: Effect of Nitrate Supplementation on Blood Pressure and Systemic Microvascular Function of Resistant Hypertensive Patients
Run by National Institute of Cardiology, Laranjeiras, Brazil · NCT06169241 · Data updated 2026-11-12
This study tests if taking beetroot extract can help lower blood pressure in people with resistant hypertension who haven't changed their blood pressure medications recently.
Quick facts
| Phase | Early Phase 1 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 75 Years |
| Sex | All |
| Enrollment | 50 (estimated) |
| Sponsor | National Institute of Cardiology, Laranjeiras, Brazil Government |
| Locations | 1 site (Rio de Janeiro) |
| Status | Recruiting |
| Started | November 1, 2023 |
| Main results expected | December 2026 |
| Study ends | December 2026 |
| Registry record updated | April 13, 2026 |
| Trial ID | NCT06169241 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are individuals diagnosed with resistant hypertension who have not changed their antihypertensive medications in the last 30 days.
✕Probably not a fit
Patients with neoplasms, heart failure, or those using medications containing nitrates will not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This clinical trial investigates the impact of nitrate supplementation, specifically through beetroot extract, on blood pressure and microvascular function in patients with resistant hypertension. The study aims to determine whether increasing nitric oxide availability can lead to improved vasodilation and overall cardiovascular health. Participants will be randomly assigned to receive either the beetroot extract or a placebo, with careful monitoring of their blood pressure and microvascular responses. The trial focuses on patients who have not altered their antihypertensive medications in the past month.
Why it matters
Potential benefit: If successful, this study could provide a novel dietary approach to managing resistant hypertension and improving cardiovascular health.
How similar studies have gone: While the use of dietary nitrates has shown promise in other studies, this specific approach in resistant hypertension is relatively novel and requires further investigation.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Resistant hypertension, with a diagnosis described in the medical record, without changing medications or increasing doses in the last 30 days. Exclusion Criteria: * neoplasms * heart failure * use of medications with nitrate in their formula * patients undergoing renal denervation
Where it's running
-
National Institute of Cardiology
Rio de Janeiro, Brazil Recruiting
Study contacts
- Study coordinator: EDUARDO TIBIRICA, MD, PhD
- Email: etibi@uol.com.br
- Phone: +55-21-99914-6075
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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In people with resistant hypertension, this study tests whether treating the main renal arteries for 2 minutes per site (vs 1 minute) leads to greater blood pressure reduction.
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.