NAD+

Cited range Clinic IV ≠ research vial

ClassRedox cofactor

Related oral precursorsNR, NMN, niacin

Routes discussedIV in clinics; SC/IM in research catalogs

Formulation noteBuffered vs non-buffered vials differ in comfort, not in the cofactor identity

What it is

NAD+ is the oxidized form of the central hydride-transfer cofactor used by sirtuins, PARPs, and hundreds of dehydrogenases. Levels change with age, diet, and cellular stress. Injectable NAD+ and oral precursors are not interchangeable products.

Benefits in plain language

What researchers and reference users usually mean when they talk about this compound. These are study themes and common claims — not a promise that it will do this in you.

NAD+ is a helper molecule cells use to make energy and run repair enzymes (sirtuins, PARPs).
The popular hope is “cellular energy and aging support” — more fuel in the mitochondria, clearer thinking, better recovery.
IV clinic and injectable research use is common in wellness circles; oral precursors (NR, NMN) are a different route.
Feeling a flush, chest tightness, or a crash can happen with aggressive IV runs. That is not a badge of effectiveness.

If a branded, FDA-approved product exists, that label is the only dose that is actually authorized. Research-chemical vials are a different object.

Mechanism of action

Raising NAD+ availability is intended to support mitochondrial redox cycling and NAD-consuming enzymes. Whether a given route actually raises the relevant cellular pool is still argued, especially for oral precursors versus parenteral NAD+.

Possible side effects / caveats

IV infusions are famous for chest pressure, flushing, nausea, and anxiety if pushed fast. Subcutaneous use is discussed as more practical but can sting. Theoretical concern in active malignancy: cancer cells also use NAD+ heavily. Pregnancy and high-dose IV are outside casual reference use.

Protocol ranges

Source tier	Amount	Route / cadence	Notes
Cited range	20–50 mg	SC or IM daily	Lower research-community starting window
Cited range	50–100 mg	SC or IM daily	Higher cited maintenance talk
Clinic practice	250–1000 mg	IV sessions	Medical setting; rate-dependent side effects