Primus Pharmaceuticals

Closed portfolio with a later-stage archive tilt

According to ClinicalTrials.gov-derived indexes, Primus Pharmaceuticals sits in the top decile of US sponsors by registered trial count (#934 of 15,742 sponsors by registered trial count).

15 total trials none currently recruiting 11 completed later-stage tilt top decile by trial count

Primus Pharmaceuticals: 15 sponsored US clinical trials, none currently recruiting.

Primus Pharmaceuticals sponsors 15 registered US clinical trials on ClinicalTrials.gov, none currently recruiting, and 11 completed. 7 of these trials are in Phase 3-4 (later-stage) and 2 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Sciatica Acute, with 1 trials.

Top-decile sponsor footprint

Primus Pharmaceuticals ranks in the top decile of sponsors by registered trial count (#934 of 15,742 sponsors by registered trial count). Volume at this scale usually reflects a long institutional pipeline, read phase tilt and therapeutic areas below before treating it as current-year activity.

Trial completion reliability score

F 36/100

11 of 14 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (78.6%), vs. national p10 68.4% / p90 100% among 1,234 sponsors with at least 10 decided trials. Still-open trials (Recruiting, Active-not-recruiting, Not-yet-recruiting) are excluded since they have not reached an outcome yet.

Indexed trials (enrollment closed)

15 total, page 1 of 1

ACTIVE NOT RECRUITING Phase 4

Efficacy of M640 in Acute Lumbosacral Musculoskeletal Conditions.

NCT06157177

COMPLETED Phase 4

Study to Assess Drowsiness, Cognition, Fall Risk After Metaxalone 640 mg and Metaxalone 800 mg

NCT06348303

COMPLETED Phase 4

Assess the Effect of Metaxalone 640 mg (M640) Compared to Tizanidine 8 mg on Truck Driving Ability and Cognition

NCT06382662

TERMINATED NA

EpiCeram for Skin Protection in Healthcare Workers

NCT04793711

COMPLETED NA

Vasculera in Participants With Lipedema

NCT05616962

TERMINATED Phase 2

Assess the Potential for Adrenal Suppression and Systemic Drug Absorption Following Multiple Dosing With DFD-06

NCT03179605

COMPLETED Phase 4

Patient Satisfaction Following Twice Daily Dosing With DFD-01 in Subjects With Moderate Plaque Psoriasis

NCT02749799

COMPLETED NA

Diosmiplex (Vasculera®) in Primary and Secondary Raynaud's Phenomenon

NCT02683408

TERMINATED Phase 3

DFD01 Spray HPA Axis Suppression Study in Adolescent Patients With Moderate to Severe Plaque Psoriasis

NCT02527421

COMPLETED Phase 2

DFD01 Spray vs Comp01 Lotion HPA Axis Suppression Study in Patients With Moderate to Severe Plaque Psoriasis

NCT02070965

COMPLETED Phase 3

A Comparison of DFD01 Spray Versus Comp01 Lotion, Vehicle Spray and Vehicle Lotion in Subjects With Moderate Psoriasis

NCT01947491

COMPLETED Phase 3

A Comparison of DFD01 Spray Versus Vehicle Spray in Subjects With Moderate Psoriasis

NCT01967069

COMPLETED NA

Study of Flavocoxid (Limbrel) vs Naproxen in Subjects With Mod-Severe Osteoarthritis of the Knee

NCT00435292

COMPLETED NA

Safety, Efficacy and Acceptability of Flavocoxid (Limbrel)A Pilot Study

NCT00303017

COMPLETED NA

Study of Flavocoxid (Limbrel) Versus Naproxen in Subjects With Moderate-Severe Osteoarthritis of the Knee

NCT00928837

Phase Distribution

PhaseTrial count
Phase 2 2
Phase 3 3
Phase 4 4

How the Primus Pharmaceuticals archive is shaped

15 indexed studies, none listed as recruiting (0% open); 11 completed (73%).

Phase mix: 7 late (III/IV) vs 2 early (I/II) (later-stage heavy).

Top condition: Sciatica Acute (1 trial), 5 others listed.

How to read a closed sponsor archive

When recruiting_count is zero, the indexed set is completed or otherwise not open. Phase tilt still describes where archived studies sat on the investigational pathway. Re-check ClinicalTrials.gov before acting.

Primus Pharmaceuticals: archived-pipeline peers nationwide

Peers matched on 15 indexed studies with no current recruiting: volume and archive shape, not condition overlap.

Primus Pharmaceuticals sits at or above the median trial volume and at or above the median recruiting share among these 9 nationwide peers -- the two do not always move together. Source: ClinicalTrials.gov (2026-08-08 snapshot). 2×2 strategic matrix plotting 9 entities by Total trials (X) and Recruiting share (Y), with a crosshair dividing the plot into four quadrants. Higher volume & more openFocused & more openHigher volume, mostly closedSmaller & mostly closed 05101520 0%10%20%30%40% Total trials Recruiting share Primus PharmaceuticalsAllakosArbor Research Collaborative for HealthArena PharmaceuticalsArrowhead Pharmaceuticals10xBio22nd Century Group23andMe3-C Institute for Social Development
Primus Pharmaceuticals sits at or above the median trial volume and at or above the median recruiting share among these 9 nationwide peers -- the two do not always move together. Source: ClinicalTrials.gov (2026-08-08 snapshot).

Primus Pharmaceuticals sits at or above the median trial volume and at or above the median recruiting share among these 9 nationwide peers -- the two do not always move together.

Sponsors near 15 archived trials

Sponsors with similar archive density (± trial count)

What to do with this Primus Pharmaceuticals page

15 registered trials is a research-attention snapshot, not an endorsement of Primus Pharmaceuticals or any single study.

  • None of Primus Pharmaceuticals's trials are currently recruiting in this registry; that can change as new trials post, or check the broader research index. Browse research indexes
  • Sciatica Acute is the condition Primus Pharmaceuticals studies most, compare against other sponsors active in the same condition before evaluating a specific study. See Sciatica Acute 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.

Primus Pharmaceuticals pipeline card: 15 registered trials from official public datasets.Report a data error.