IV infusion is the most complete way to deliver NAD+ and the least practical way to keep delivering it. Both halves of that sentence are true, and which half matters depends entirely on whether you are running a short protocol or a long one.

Who this format is for

People doing a defined, intensive, supervised course rather than ongoing maintenance — and who specifically want the procedure to happen in a clinical setting with someone monitoring it.

What an appointment looks like

NAD+ infusions are run slowly. A session commonly takes several hours, and the reason is tolerability rather than caution for its own sake: infused too quickly, NAD+ reliably produces an unpleasant set of sensations — flushing, chest tightness, abdominal cramping, nausea. Slowing the drip controls it. Staff typically titrate the rate against how you are feeling, which is a large part of what you are paying for.

Protocols are usually sold as a series of sessions rather than a single visit, often run over consecutive days or across several weeks.

What you are actually buying

  • Complete bioavailability. The dose goes into the bloodstream. No digestive losses, no first-pass metabolism. This is not arguable.
  • Supervision. Someone is watching the rate and can respond if you react badly. For some people this is the entire value.
  • A finite, scheduled commitment. A course with a start and an end is easier for some people to complete than an open-ended daily habit.

What you are paying for it

Clinic session pricing, multiplied by a protocol. Against a daily capsule measured in tens of dollars a month, the gap is large enough that bioavailability alone does not settle the question. You are also paying several hours of your time per session, on site, repeatedly.

The comparison that matters. The real alternative to infusion for most people is not a capsule — it is subcutaneous injection, which bypasses digestion identically but without the chair, the clinic rate or the afternoon. If you cannot articulate why you need supervision specifically, that is usually the better trade.

Honest limitations

  • It is a spike, not a level. A session raises NAD+ sharply and then it falls. Long-run status is governed by what you do most days.
  • The acute effects are routine, not rare. Expect to feel the infusion if the rate is pushed.
  • Claims outrun evidence here more than anywhere else in the category. NAD+ infusion is marketed for a very wide range of outcomes. The published human evidence supporting those specific claims is considerably thinner than the marketing volume suggests.
  • Quality varies by provider. This is a loosely standardised corner of the market. Sourcing, dosing and protocols differ between clinics.
Last reviewed: 3 October 2026. Nothing on this page is medical advice.

Related: Oral vs IV, compared properly · Injectable NAD+ · All six formats