North Star desiccated porcine thyroid tablets for primary hypothyroidism
Official title: An Open-Label, Single-Arm Study to Investigate the Efficacy and Safety of North Star Desiccated Porcine Thyroid Extract Tablets for the Treatment of Primary Hypothyroidism
Run by Neuvosyn Laboratories, LLC · NCT07747103 · Data updated 2026-11-12
This phase 3, open-label study tests whether North Star desiccated porcine thyroid tablets can help people with primary hypothyroidism who are already taking a stable dose of LT4.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 75 Years |
| Sex | All |
| Enrollment | 466 (estimated) |
| Sponsor | Neuvosyn Laboratories, LLC Industry-sponsored |
| Locations | 25 sites (Modesto, California and 24 other locations) |
| Status | Recruiting |
| Started | June 30, 2026 |
| Main results expected | November 2027 |
| Study ends | December 2027 |
| Registry record updated | August 5, 2026 |
| Trial ID | NCT07747103 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults with primary hypothyroidism (including Hashimoto's) who are on a stable LT4 dose for at least 12 weeks and have achieved euthyroid status within the last 6 weeks to 12 months.
✕Probably not a fit
Patients who do not respond to porcine thyroid extracts or who have contraindications to desiccated thyroid products may not benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is an open-label, single-arm Phase 3 trial evaluating the efficacy and safety of North Star desiccated porcine thyroid extract tablets in adults with primary hypothyroidism. Eligible participants must have been on a stable LT4 dose for at least 12 weeks and in euthyroid status within the prior 6 weeks to 12 months. The study will monitor thyroid-related outcomes and safety over time in multiple centers. Key exclusions include conditions or surgeries that affect drug absorption or metabolism, recent major illness requiring hospitalization, or use of prohibited medications. The lead sponsor is Neuvosyn Laboratories, with sites in Modesto, Redding, and San Diego, CA.
Why it matters
Potential benefit: If successful, the therapy could offer an alternative treatment option for improving thyroid control in primary hypothyroidism.
How similar studies have gone: Past studies of desiccated thyroid products have shown variable efficacy; this study explores a specific desiccated porcine formulation in a controlled setting.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Diagnosed with primary hypothyroidism, including Hashimoto's Thyroiditis, and on therapy with a stable dose of LT4 (minimum 50 mcg per day, administered 7 days per week) for at least 12 weeks prior to Screening * Have had euthyroid status for at least 6 weeks and up to 12 months prior to Screening (Visit 1), with at least one documented minimum stable dose of 50 mcg LT4. * Agree to practice a method of contraception * Female patients not pregnant or lactating at Screening * Agree to practice a method of contraception of greater than 90% reliability * Willing to give written informed consent for the Study * Provide written authorization for use and disclosure of protected health information Exclusion Criteria: * Any clinical condition or previous surgery that might affect the absorption, distribution, biotransformation or excretion of North Star * Hospitalization for a major illness within 5 weeks prior to Screening * Concomitant use of prohibited medications or supplements * Have uncontrolled diabetes * Taking or having taken prescription or over-the-counter weight loss medications within 6 weeks prior to Screening * Participated in another investigational new drug study within 30 days or 5 half-lives of the IMP, whichever is longer, prior to the first study drug administration. * For female subjects, be pregnant, nursing or planning to become pregnant during the study
Where it's running
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AppleMed Research Group, LLC
Miami, Florida, United States Recruiting -
Advanced Medical Research Institute, LLC
Miami, Florida, United States Recruiting -
Paradigm Clinical Research Centers, LLC
Modesto, California, United States Not yet recruiting -
Paradigm Clinical Research Centers, LLC
Redding, California, United States Not yet recruiting -
Paradigm Clinical Research Centers, LLC
San Diego, California, United States Not yet recruiting -
Sunwise Clinical Research
Walnut Creek, California, United States Not yet recruiting
Show 19 more locations
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Paradigm Clinical Research Centers, LLC
Aurora, Colorado, United States Not yet recruiting -
Accel Research
Lakeland, Florida, United States Not yet recruiting -
Accel Research
Largo, Florida, United States Not yet recruiting -
3Sync LLC
Miami Lakes, Florida, United States Not yet recruiting -
3Sync Research
Palm Springs, Florida, United States Not yet recruiting -
Precision Clinical Research
Sunrise, Florida, United States Not yet recruiting -
Paradigm Clinical Research Centers, LLC
Boise, Idaho, United States Not yet recruiting -
Boston Clinical Trials
Boston, Massachusetts, United States Not yet recruiting -
ActivMed Practices and Research
Methuen, Massachusetts, United States Not yet recruiting -
M3 Wake Research - Las Vegas Wellness Way
Las Vegas, Nevada, United States Not yet recruiting -
M3 Wake Research
Raleigh, North Carolina, United States Not yet recruiting -
Progressive Medicine of the Triad, LLC
Winston-Salem, North Carolina, United States Not yet recruiting -
M3 Wake Research
Charleston, South Carolina, United States Not yet recruiting -
Coastal Carolina Research Center, LLC
North Charleston, South Carolina, United States Not yet recruiting -
M3 Wake Research
Chattanooga, Tennessee, United States Not yet recruiting -
M3 Wake Research
Dallas, Texas, United States Not yet recruiting -
Advanced Medical Trials, LLC
Georgetown, Texas, United States Not yet recruiting -
Olympus Clinical Research
Sugar Land, Texas, United States Not yet recruiting -
Charlotteville Medical Research Center, LLC
Charlottesville, Virginia, United States Not yet recruiting
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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.