Explainer
What are NAD+ injections — and do they actually work?
Reviewed by the FaroRx clinical team · Updated September 2026
The short answer
NAD+ is a coenzyme every cell uses to turn food into energy and to run DNA repair; levels decline with age. Injected NAD+ bypasses digestion and raises circulating levels directly, which is why people report improved energy, focus and recovery within the first weeks. Human evidence is early and mostly small-scale, so treat it as promising rather than proven. FaroRx supplies at-home NAD+ injections at $179 per month.
What the evidence supports
- NAD+ falls measurably with age — this is well established.
- Raising NAD+ improves mitochondrial function in laboratory and animal models.
- Small human studies show improved markers of metabolic and cellular health.
- Large long-term human trials on ageing outcomes do not yet exist.
Injection vs IV vs oral
| Route | Absorption | Practicality | Typical cost |
|---|---|---|---|
| At-home subcutaneous injection | High | Weekly at home | $179/mo at FaroRx |
| IV infusion at a clinic | Highest | 2–4 hours per session, appointment needed | $300–$800 per session |
| Oral NAD / NMN supplement | Low — broken down in digestion | Very easy | $40–$90/mo |
What people usually notice
Most report a lift in daytime energy and mental clarity in the first two to four weeks, better workout recovery, and steadier sleep. Effects are cumulative rather than immediate, and they fade if you stop.
The FaroRx safety note
FaroRx medications are prescription-only. A licensed provider reviews your intake, medical history and medication list before anything is prescribed, and can decline if a treatment is not appropriate for you. Nothing here is medical advice.
Treatments mentioned
Common questions
How long do NAD+ injections take to work?
Most people notice energy and focus changes within two to four weeks of consistent weekly dosing.
Are NAD+ injections better than IV drips?
IV delivers more per session, but at-home injections are far cheaper, more consistent week to week and do not require appointments.
Are there side effects?
Flushing, mild nausea and injection-site tenderness are the most common. IV administration too quickly can cause chest tightness — a reason many prefer subcutaneous dosing.
See if NAD+ is right for you
Complete a short online visit and a licensed provider will review whether treatment is right for you.
This guide is for information only and is not medical advice. Compounded medications are prepared by a licensed U.S. pharmacy and are not FDA-approved products.