NAD+ injections are increasingly being discussed in wellness and clinical spaces, but the conversation around them can be confusing, as not every treatment in the category uses NAD+ as its active ingredient. The Niagen® At-Home Injection Kit uses nicotinamide riboside chloride (NRCl), the active ingredient in Niagen Plus—a patented form of vitamin B3 that cells can convert into NAD+.
That distinction matters: NAD+ is an essential coenzyme involved in cellular energy production, metabolic function, and repair processes—but it is also a relatively large molecule that does not cross cell membranes intact. NR, by comparison, is a smaller NAD+ precursor that can enter cells intact and be converted into NAD+.
Niagen Plus brings that precursor-based approach to a clinician-directed, prescription-at-home format designed for people who want a clinician-directed injectable option without recurring clinic visits.
The Niagen® At-Home Injection Kit is a prescription-only NR injection, not an NAD+ injection. It contains Niagen® (NRCl) in a ready-to-inject liquid that's administered subcutaneously at home. Access starts with a purchase, and then an online intake and a telehealth review by a licensed provider, and if a prescription isn't issued, your purchase is fully refunded.
This guide explains what injectable Niagen is, how NR differs from NAD+, what the at-home prescription process looks like, and what’s new in the latest version of the kit.
NR vs. NAD+: What’s the Difference?
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme involved in many essential cellular reactions, while NR is a precursor that cells use to produce NAD+. Simply put, NAD+ is the molecule involved in many essential cellular reactions, and NR is one of the building blocks the body can use to make it.
Inside cells, NAD+ helps turn food into usable energy and supports processes involved in metabolism. It also serves as a cofactor for enzymes involved in cellular maintenance and processes such as DNA repair. NR does not perform these functions directly—instead, it serves as a precursor that cells can use to support NAD+ synthesis.
NR also has a substantial body of human research, especially in oral formulations. In clinical studies, oral NR has been well-tolerated and found to increase whole-blood NAD+ in adults, with dose-dependent increases reported in randomized trials.
Overall, direct NAD+ administration and injectable NR contain different molecules, follow different cellular pathways, and have different evidence bases—so they should not be assumed to deliver the same experience or results. For a deeper look at how the two molecules compare, see NR vs. NAD+.
What Is the Niagen At-Home Injection Kit?
The Niagen® At-Home Injection Kit is a clinician-directed, prescription-only option for eligible people who want to use injectable Niagen at home. It’s designed to provide a convenient alternative to recurring clinic visits, mobile IV services, or ongoing in-person appointments. Niagen Plus continues to refine the at-home experience: the kit now uses a liquid vial, rather than the previous powder formulation that required mixing before use.
The kit features Niagen®—nicotinamide riboside chloride (NRCl)—a form of vitamin B3 that acts as an NAD+ precursor. Rather than delivering NAD+ directly, it provides NRCl, which cells can use to make NAD+. Niagen is administered by subcutaneous injection, meaning it is injected into the fatty tissue just beneath the skin rather than into a vein or muscle.
Each kit includes 1 × 5mL vial of ready-to-inject liquid formulation, 10 1 mL single-use syringes, and 20 alcohol swabs. Store the vials by [write storage instructions here] and follow the prescription label and Patient Instructions for Use for handling, injection, and disposal instructions. If prescribed, the kit is shipped directly to you and can be used according to the clinician’s prescribed dose and Patient Instructions for Use.
What Makes the Niagen® At-Home Injection Kit Different From NAD+ Injections?
The Niagen® At-Home Injection Kit is an NR injection, not an NAD+ injection. Many treatments described as “NAD+ injections” deliver NAD+ directly, while the Niagen® At-Home Injection Kit instead contains patented Niagen®—nicotinamide riboside chloride (NRCl).
This is a precursor-based approach rather than direct NAD+ administration. Because NAD+ and NR are distinct molecules with different cellular pathways, the Niagen® At-Home Injection Kit offers a different, precursor-based approach to supporting NAD+ levels. For people currently using NAD+ injections, it’s an alternative to consider.
The Niagen® At-Home Injection Kit is a prescription-only, clinician-directed option for eligible adults who prefer subcutaneous administration at home.
How Is the Liquid Formula Different From the Powder Kit?
The Niagen® At-Home Injection Kit now features a ready-to-inject liquid formulation, designed to make the at-home experience simpler. The kit provides the same clinician-directed, pharmaceutical-grade Niagen in a format that requires no mixing or reconstitution before use.
With fewer components and fewer steps, the vial is ready to draw from and inject according to your clinician’s prescribed dose and Patient Instructions for Use. Rather than mixing the medication before administration, you can draw the prescribed amount from the vial and administer it subcutaneously as directed.
The update is part of Niagen Plus’s ongoing effort to make at-home prescription NAD+ precursor therapy simpler and more accessible. The kit continues to provide patented Niagen® (NRCl) in a clinician-directed format and is now available for a price of $199.
What Does the At-Home Process Look Like?
To get your Niagen® At-Home Injection Kit, follow these steps:
- Purchase the kit online. Completing your purchase starts the medical review process.
- Complete the online medical intake questionnaire, including your health history and current medications.
- A licensed healthcare provider reviews your information during a telehealth consultation and determines whether prescription Niagen is appropriate.
- If approved, your clinician provides your prescribed dose and directions. If a prescription isn't issued, your purchase is fully refunded.
- If prescribed, your kit ships free via Next Day Air to all states except Alabama and Arkansas.
- Draw your prescribed dose from the vial and administer it subcutaneously according to your clinician's directions and the Patient Instructions for Use.
After the initial consultation, no recurring clinic visits, mobile IV services, or nurse visits are needed. The at-home administration process is designed to take minutes, rather than the hours typically associated with an in-clinic IV appointment.
What Does Research Say About Injectable Niagen®?
Research on injectable Niagen is still emerging. While oral NR has been well-studied in humans, findings from oral supplements do not automatically apply to a prescription injectable protocol.
A recent 100-day, open-label clinical pilot study evaluated a three-times-weekly subcutaneous Niagen® protocol at 50 mg or 100 mg in generally healthy adults. The study tracked changes over time in biological markers and participant-reported outcomes.
Among the exploratory findings, at day 90, cells produced less ATP through glycolysis, while mitochondrial ATP production remained about the same. As a result, mitochondrial ATP made up a larger share of the energy production measured in the study. This suggests a shift in how the cells made energy, though it does not mean they produced more energy overall.
Urinary CML decreased by the end of the study in the combined group. CML is a marker associated with oxidative stress, a marker for cellular “wear and tear” . The study also observed reductions in a marker of DNA oxidative damage by day 90. Participants reported reductions in fatigue scores, improvements in sleep quality measures within weeks that were maintained through day 90, and improved ratings of overall health and well-being. In addition, about 35% of participants reported visible skin improvements, though these observations were self-reported.
These findings are encouraging, but they are not the final word on injectable NR. Because it was open-label and exploratory, its findings cannot establish that injectable Niagen treats fatigue, sleep problems, skin concerns, aging, or any medical condition. Larger, controlled studies are needed to clarify longer-term safety and tolerability, confirm the exploratory findings, and determine whether observed biomarker and self-reported changes actually translate into meaningful clinical outcomes.
(Based on an open-label clinical pilot study Russ et al., 2026). Findings are exploratory, pending validation in larger controlled trials.)
Is Injectable Niagen Right for You?
The Niagen® At-Home Injection Kit may be an option for adults interested in a clinician-directed, prescription-only approach to injectable Niagen from home. It’s designed for people who prefer at-home administration over recurring clinic appointments.
Whether prescription Niagen is appropriate for you depends on your individual health history, current medications, and other relevant clinical factors. Accurately completing the online intake and telehealth consultation is important so a licensed healthcare provider can review your information and make the prescribing decision. Start your online intake now.
FAQs About Injectable Niagen
Why use NR instead of NAD+ in an injection?
Niagen® contains nicotinamide riboside chloride (NRCl), an NAD+ precursor, not NAD+. NR can be taken up by cells directly and converted into NAD+, while NAD+ does not efficiently cross cell membranes intact. A Niagen® injection protocol is meant to be used in place of NAD+ injections, not in addition to them. If you’re currently receiving NAD+ injections, talk with your provider before starting Niagen®.
Is the Niagen At-Home Injection Kit prescription-only?
Yes, the Niagen® At-Home Injection Kit is prescription-only and clinician-directed. A licensed healthcare provider reviews your medical intake during a telehealth consultation and will determine whether prescription Niagen® is appropriate for you.
Who makes and compounds injectable Niagen?
Injectable Niagen® is compounded at an FDA-registered 503B outsourcing facility and dispensed by a licensed 503A pharmacy after a licensed healthcare provider issues a patient-specific prescription. Niagen® is the patented nicotinamide riboside chloride ingredient used in the injection kit.
What type of injection is used?
Niagen® is administered by subcutaneous injection, meaning it is injected into the fatty tissue just beneath the skin rather than into a vein or muscle. Patients draw their prescribed dose from the vial and administer it according to their clinician’s directions and Patient Instructions for Use.
Does the kit require a clinic visit?
The program begins with a telehealth consultation with a licensed healthcare provider, not an in-person appointment. If you receive a prescription, the kit is delivered directly to your door, and no recurring appointments are needed.
Who should not use Niagen®?
Injectable Niagen is not appropriate for everyone. Eligibility depends on factors like your health history, current medications, and other clinical considerations. Complete the medical intake questionnaire accurately and discuss relevant health information with the licensed healthcare provider, who will determine whether a prescription is appropriate.
The Bottom Line on Injectable Niagen®
The Niagen® At-Home Injection Kit is a prescription-only, clinician-directed option for eligible adults who prefer to administer injectable NR at home rather than attend in-person treatment or clinic appointments. A licensed healthcare provider reviews each patient’s health history, medications, and other relevant clinical factors to determine whether Niagen is appropriate. For those valuing convenience and clinician-guided care, the Niagen® Injection Kit provides a flexible way to receive injectable NR from home.
