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NiagenPlus

Phase 1

Healthy Volunteer | Small molecule | Neurology |Niagen Bioscience, Inc.|Last Updated: Nov 26, 2025

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLED
Total Trials1
Total Enrollment40

FDA Designations

ORPHAN_DRUGPRIORITY_REVIEW

Clinical trial landscape

NiagenPlus · 1 trial · 2 indications

Phase 1 1
NCT07251608Randomized, Open-label, Safety Study of Subcutaneous and Intramuscular Injections of Niagen® PlusHealthy Volunteer
RECRUITING40 Analytics
PHASE1RECRUITING
Randomized, Open-label, Safety Study of Subcutaneous and Intramuscular Injections of Niagen® Plus
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Study Endpoints

Primary Endpoints

Incidence and severity of adverse events
From Day 1 (first injection) through Day 100 (final visit)

The incidence and severity of treatment-associated moderate and severe adverse events (AEs) will be assessed.

Blood Pressure
Immediately before the first intervention, and through the 100th day of the study.

Blood pressure, systolic and diastolic, will be measured

Heart Rate
Immediately before the intervention and through the 100th day of the study (final visit).

Heart rate will be measured.

Pulse Rate
Immediately before and through the 100th day of the study (final visit).

Pulse rate will be measured.

Respiratory Rate
Immediately before and through the 100th day of the study (final visit).

Respiratory rate will be measured.

Blood Oxygen
Immediately before and through the 100th day of the study (final visit).

Blood oxygen level will be measured.

Complete Blood Count
Immediately before and through the 100th day of the study (final visit).

A complete blood count with differential will be evaluated through whole blood samples

Comprehensive Metabolic Panel
Immediately before and through the 100th day of the study (final visit).

Comprehensive metabolic panel will be evaluated through whole blood samples

Homocysteine
Immediately before and through the 100th day of the study (final visit).

Homocysteine will be measured from venous blood samples as part of the primary safety laboratory panel. Levels will be analyzed as absolute values and change-from-baseline to evaluate any clinically significant elevations or shifts associated with repeat dosing of Niagen®Plus.

High-Sensitivity C-Reactive Protein (hs-CRP)
Immediately before and through the 100th day of the study (final visit).

High-sensitivity C-reactive protein will be assessed from venous blood samples as part of the primary safety laboratory panel. hs-CRP is a sensitive biomarker of systemic inflammation and may signal acute or sub-acute inflammatory responses to repeated Niagen®Plus dosing. Levels will be analyzed as absolute values and change-from-baseline to identify any clinically meaningful elevations or trends. Data will be summarized descriptively by dose and route of administration to support safety evaluation.

Secondary Endpoints

Change in whole-blood NAD⁺ concentrations
Baseline (Day 1) through Day 100
Participant- and clinician-reported injection-site experience
Immediately post-injection through 180 minutes after dosing (Days 1-3)
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
50 mg Subcutaneous Niagen®PlusEXPERIMENTALParticipants receive 50 mg Niagen®Plus administered subcutaneously (under the skin) once daily for three consecutive days during in-clinic visits (Days 1-3). Participants then continue self-administered subcutaneous injections of the same dose three times per week (Monday, Wednesday, Friday) from Days 10-100.
100 mg Subcutaneous Niagen®PlusEXPERIMENTALParticipants receive 100 mg Niagen®Plus administered subcutaneously once daily for three consecutive days during in-clinic visits (Days 1-3). Participants then continue self-administered subcutaneous injections of the same dose three times per week (Monday, Wednesday, Friday) from Days 10-100.
50 mg Intramuscular Niagen®PlusEXPERIMENTALParticipants receive 50 mg Niagen®Plus administered intramuscularly (into the deltoid muscle) once daily for three consecutive days during in-clinic visits (Days 1-3). No further at-home injections are performed; participants return for follow-up visits on Days 10, 40, and 100.
100 mg Intramuscular Niagen®PlusEXPERIMENTALParticipants receive 100 mg Niagen®Plus administered intramuscularly (into the deltoid muscle) once daily for three consecutive days during in-clinic visits (Days 1-3). No further at-home injections are performed; participants return for follow-up visits on Days 10, 40, and 100.

Interventions

NameTypeDescription
Niagen®PlusDRUGPharmaceutical-grade nicotinamide riboside chloride (NRCl), compounded for sterility and reconstituted in bacteriostatic water for injection. Administered by subcutaneous or intramuscular injection at 50 mg or 100 mg per dose. Participants receive three clinician-administered injections during clinic visits on Days 1-3, followed by at-home subcutaneous self-administration three times per week (Monday, Wednesday, Friday) from Days 10-100, depending on study arm.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Generally healthy adults, aged 18+ * Demonstrated baseline fatigue as determined by a below average score from the FAS (threshold prespecified in SAP). * NAD+ or NAD+ precursor injection naïve (including intravenous, intramuscular, subcutaneous, or other injection route) (i.e....

Countries:United States
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Frequently asked questions about NiagenPlus

What is NiagenPlus used for?

NiagenPlus is an investigational small molecule being studied for use in healthy volunteers, including those experiencing fatigue. It is currently in Phase 1 clinical development for the neurology therapeutic area. The drug is administered by subcutaneous or intramuscular injection and is being evaluated for safety in a clinical trial.

What does NiagenPlus target?

NiagenPlus is a small molecule being developed by Niagen Bioscience, Inc. for neurological applications. The specific molecular target of NiagenPlus has not been disclosed in available information. The drug is currently in Phase 1 clinical trials studying its safety in healthy volunteers, including those with fatigue.

Who makes NiagenPlus?

NiagenPlus is developed by Niagen Bioscience, Inc., a biopharmaceutical company. The company's stock ticker is NAGE. NiagenPlus is currently in Phase 1 clinical development as an investigational small molecule for use in healthy volunteers, including those experiencing fatigue.

What phase is NiagenPlus in?

NiagenPlus is in Phase 1 clinical development. It is an investigational drug, not yet approved by the FDA. The drug has received FDA designations of orphan drug and priority review. A Phase 1 trial is currently recruiting participants to evaluate the safety of subcutaneous and intramuscular injections of NiagenPlus.

What clinical trials is NiagenPlus in?

NiagenPlus is being studied in one active Phase 1 clinical trial, NCT07251608, titled 'Randomized, Open-label, Safety Study of Subcutaneous and Intramuscular Injections of Niagen® Plus'. This trial is recruiting 40 participants in the United States, including healthy volunteers and those with fatigue. The study is randomized and controlled, but not double-blind.

Is NiagenPlus the same as Niagen®Plus?

Yes, NiagenPlus is also known as Niagen®Plus. The drug is being developed by Niagen Bioscience, Inc. under the brand name Niagen®Plus. It is currently in Phase 1 clinical trials for use in healthy volunteers, including those with fatigue, and has received FDA orphan drug and priority review designations.