NAD+ Injection vs. IV: What's the Difference?

Published June 13, 2026

NAD+ has become a popular part of longevity-focused wellness routines, and it’s commonly offered in two forms: injection and IV infusion. If you’re deciding between them, here’s a plain-language look at how they differ. (For a primer on the molecule itself, see what NAD+ is.)

How each is delivered

IV infusion delivers NAD+ directly into the bloodstream over a session that can last from under an hour to a few hours, depending on the protocol.
Injection is a quicker subcutaneous or intramuscular dose that takes far less time and is easier to fit into a routine.

Both aim to support the body’s NAD+ levels; the practical differences are mostly about convenience and experience.

Convenience and time

The biggest day-to-day difference is time. IV sessions require sitting for the duration of the infusion, which some people find relaxing and others find inconvenient. Injections are fast, which makes them easier to repeat consistently as part of an ongoing routine.

Experience and comfort

Some people report that slower IV infusions feel more comfortable, since rapid delivery of NAD+ can cause sensations like flushing or mild discomfort during the session. Injections spread smaller amounts over time. Individual experiences vary.

Cost considerations

Delivery method, dose, and frequency all affect cost. If you’re budgeting, see our overview of NAD+ injection cost.

Which is right for you?

There’s no universal answer — it depends on your goals, schedule, comfort, and your care team’s guidance. With Renlo, NAD+ therapy is offered as part of a longevity-focused routine, and your care team can help you decide what fits.

This article is for general educational purposes only and is not medical advice. These statements have not been evaluated by the Food and Drug Administration. NAD+ is a wellness offering and is not intended to diagnose, treat, cure, or prevent any disease. Always consult your care team about what’s appropriate for you.

Frequently asked questions

What's the main difference between NAD+ injections and IV?

IV infusions deliver NAD+ directly into the bloodstream over a longer session, while injections are quicker and more convenient. The right option depends on your preferences and your care team's guidance.

Are NAD+ injections more convenient than IV?

Generally yes. Injections take less time and can fit more easily into a routine, whereas IV infusions typically require a longer in-session appointment.

Is NAD+ a treatment for a medical condition?

No. NAD+ is offered as a wellness service and has not been evaluated by the FDA to diagnose, treat, cure, or prevent any disease.