Clinical trial Recruiting at 2 sites Phase 3 Interventional Ages 18 to 75

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

PhasePhase 3
Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment466 (estimated)
SponsorNeuvosyn Laboratories, LLC
Industry-sponsored
Locations25 sites (Modesto, California and 24 other locations)
StatusRecruiting
StartedJune 30, 2026
Main results expectedNovember 2027
Study endsDecember 2027
Registry record updatedAugust 5, 2026
Trial IDNCT07747103 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

  • 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
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    Aurora, Colorado, United States
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    Miami Lakes, Florida, United States
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    Palm Springs, Florida, United States
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  • Precision Clinical Research
    Sunrise, Florida, United States
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    Boise, Idaho, United States
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    Boston, Massachusetts, United States
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    Las Vegas, Nevada, United States
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    Raleigh, North Carolina, United States
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    Winston-Salem, North Carolina, United States
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  • M3 Wake Research
    Charleston, South Carolina, United States
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  • Coastal Carolina Research Center, LLC
    North Charleston, South Carolina, United States
    Not yet recruiting
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    Chattanooga, Tennessee, United States
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  • M3 Wake Research
    Dallas, Texas, United States
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  • 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

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
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Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.