Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Nitric Oxide: early-phase trial registry
3 of 4 indexed Nitric Oxide trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #4,115 of 28,707 conditions by registered trial count.
4 US clinical trials · 3 currently recruiting · #4,115 of 28,707 conditions by registered trial count
Nitric Oxide: 4 US clinical trials tracked, 3 recruiting.
Nitric Oxide is the subject of 4 registered US clinical trials on ClinicalTrials.gov, 3 of them currently open to new participants. 1 are in Phase 3-4 (later-stage) and 2 in Phase 1-2 (earlier-stage). The most active sponsor is Xijing Hospital, running 1 of these trials.
Enrollment posture brief
Registry condition nitric-oxide
OPEN 3 | RECR 75% | LATE 1 | EARLY 2 | RANK #4115 | SPON 1
Volume-matched condition peers
Nearest open-share peer: Activity, Motor (75% recruiting · 8 trials)
Nitric Oxide lists 3 open slots (75% of 4 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for Nitric Oxide on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.
-
Nitric Oxide is recruiting above its size-band peers.
3 of 4 indexed trials (75%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
Open and recent trials
4 total, page 1 of 1
Nitric Oxide for Reduced Intensive Support in Cardiac Surgery With Cardiopulmonary Bypass
Xijing Hospital
NCT06702553
Response to Exercise and Nitric Oxide in PAD
Northwestern University
NCT06657976
Dose-Response Impact of Glucosyl-Hesperidin (CitraPeak) on Exercise Performance, Blood Flow, Stress, Cognition, and Other Perceptual Indicators
Lindenwood University
NCT06672952
Effects of Nitrite on Blood Vessel Dilation in Normal Volunteers
National Heart, Lung, and Blood Institute (NHLBI)
NCT00048477
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 2 | 2 |
| Phase 3 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Nitric Oxide records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Nitric Oxide trials. A trial with sites in several states counts in each.
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Related
What to do with this Nitric Oxide page
4 registered trials, 3 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 3 Nitric Oxide trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Xijing Hospital sponsors the most Nitric Oxide trials on record, review their full trial history before evaluating a specific study. See Xijing Hospital's trials
- Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide
Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Nitric Oxide condition card totals 4 registered trials; most-linked intervention L-NMMA and Sodium Nitrite; top US site state Missouri. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.