Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
L-Phenylalanine: later-stage trial registry
1 of 1 indexed L-Phenylalanine trials are currently recruiting, with more weight in Phase 3-4.
Corpus placement: #11,370 of 28,707 conditions by registered trial count.
1 US clinical trials · 1 currently recruiting · #11,370 of 28,707 conditions by registered trial count
L-Phenylalanine: 1 US clinical trial tracked, 1 recruiting.
L-Phenylalanine is the subject of 1 registered US clinical trials on ClinicalTrials.gov, 1 of them currently open to new participants. 1 are in Phase 3-4 (later-stage) and 0 in Phase 1-2 (earlier-stage). The most active sponsor is Weill Medical College of Cornell University, running 1 of these trials.
Enrollment posture brief
Registry condition l-phenylalanine
OPEN 1 | RECR 100% | LATE 1 | EARLY 0 | RANK #11370 | SPON 1
Volume-matched condition peers
Nearest open-share peer: Aortic Arch Aneurysm (100% recruiting · 5 trials)
L-Phenylalanine lists 1 open slots (100% of 1 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 L-Phenylalanine 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.
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L-Phenylalanine is recruiting above its size-band peers.
1 of 1 indexed trials (100%) 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
1 total, page 1 of 1
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 4 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on L-Phenylalanine records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on L-Phenylalanine 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 L-Phenylalanine page
1 registered trials, 1 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 1 L-Phenylalanine trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Weill Medical College of Cornell University sponsors the most L-Phenylalanine trials on record, review their full trial history before evaluating a specific study. See Weill Medical College of Cornell University'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 L-Phenylalanine condition card totals 1 registered trials; most-linked intervention L-Phenylalanine 500 mg Veg Capsule product; top US site state New York. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.