Evaluating the effects of injectable Niagen®+ compared to NAD+ for healthy aging

Absorption and Tolerability of Injectable Administration of Niagen®+, Nicotinamide Riboside Chloride, a Specialized Form of Vitamin B3, as Compared to NAD+: a Double Blinded, Randomized, Controlled Clinical Trial

Not applicable Interventional Nutraceuticals Research Institute · NCT06919328

This study is testing if an injectable form of vitamin B3 called Niagen®+ is safe and effective for healthy aging compared to another treatment called NAD+ in healthy adults.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment70 (estimated)
Ages40 Years to 65 Years
SexAll
SponsorNutraceuticals Research Institute Academic / other
Locations1 site (Huntsville, Alabama)
Trial IDNCT06919328 on ClinicalTrials.gov

What this trial studies

This study investigates the tolerability and subjective effects of Niagen®, a specialized form of vitamin B3, administered through intramuscular, subcutaneous, and intravenous-push routes in healthy adults. It compares these effects to those of NAD+, an active comparator, using the same administration methods. Participants will be monitored for their responses to the injections to determine the safety and acceptability of Niagen®+. The study aims to gather data that could inform future applications of NAD+ precursors in promoting healthy aging.

Who should consider this trial

Good fit: Ideal candidates are healthy adults aged 40-65 with a BMI of 25-34.9 and a sedentary lifestyle.

Not a fit: Patients with current diagnoses of seizure disorders, diabetes, or significant kidney or liver issues may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide insights into effective methods for enhancing healthy aging through improved NAD+ levels.

How similar studies have performed: While the specific administration of Niagen®+ is novel, similar studies on NAD+ precursors have shown promising results in enhancing health outcomes.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Provision of signed and dated informed consent form
* Stated willingness and demonstrated ability to comply with all study procedures, as well as availability for the duration of the study
* Lives within 100 miles of the NRI study site
* Any gender, aged 40-65, inclusive
* Good general health as evidenced by medical history
* BMI 25-34.9 kg/m2
* Sedentary behavior (defined as \<20 minutes per day or 100 minutes per week of moderate to vigorous exercise)
* Demonstrated fatigue (Fatigue Assessment Scale) defined as a below-average score
* For females of reproductive potential: use of highly effective contraception for at least 1 month prior to screening and agreement to use such a method during study participation and for an additional month after the end of the study
* Agreement to adhere to Lifestyle Considerations throughout study duration

Exclusion Criteria:

* Current diagnosis of any seizure disorder, diabetes or insulin resistance, any kidney or liver disorder, heart disease, anemia, cancer, or Parkinson's disease
* ANY chronic illness (pre-disease state acceptable)
* Out of range phosphate levels at baseline
* BMI less than 25 or greater than or equal to 35
* Pregnancy, trying to conceive, or breastfeeding
* Known allergic reactions to any components of the intervention or related compounds, including any form of B3
* Positive COVID-19 test within 30 days of the study period
* Recent dramatic weight changes (10% change in body weight in the last 6 months)
* Existing usage of a NAD+ or NAD precursor supplement in any form (oral, nasal, patch, or injection/IV administration), including a B-complex supplement, within 60 days of the study, not including multivitamins.
* Introducing a new medication, supplement, investigational drug, or other intervention (including lifestyle changes) within 60 days of the start of the study.

Where this trial is running

Huntsville, Alabama

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Healthy AgingNAD+
Last reviewed 2026-06-13 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.