Can a simple supplement boost heart failure patients' strength?
NCT ID NCT06312748
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether giving L-Citrulline, tetrahydrobiopterin (BH4), and atorvastatin can improve blood vessel function and physical ability in veterans with a type of heart failure called HFpEF. About 90 participants will take these medications and be tested on how well their blood vessels respond and how much they can move. The goal is to find a way to help them feel better and be more active.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 90 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2021
- Expected to finish
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Sep 2030
An estimate. End dates often move.
- Lead sponsor
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A government agency
The lead sponsor is a US federal agency other than the NIH.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age 18 years or older and able to give written informed consent. * New York Heart Association (NYHA) functional class I, II, or III. * Left Ventricular Ejection Fraction (LVEF) \> 50%. * Plasma Brain Natriuretic Peptide (BNP) equal to or greater than 150 pg/mL or NT-proBNP equal to or greater than 600 pg/mL at Visit 1, or a BNP equal to or great than 100 pg/mL (or NT-proBNP equal to or greater than 400 pg/mL) and a hospitalization for heart failure within the last 12 months. Exclusion Criteria: * History of hypersensitivity or allergy to any lipophilic statin. * Prior EF \<50%. * NYHA Class IV. * Patients with HFpEF secondary to significant uncorrected primary valvular disease. * Active liver disease or unexplained persistent elevations in serum transaminase. * Women who are pregnant or may become pregnant. * Patients currently treated with antioxidants, nitrates, PDE-5 inhibitors, or statins.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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VA Salt Lake City Health Care System, Salt Lake City, UT
RECRUITINGSalt Lake City, Utah, 84148-0001, United States
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