Comparison · longevity

NAD+ IV vs Injection

Both deliver NAD+ to the same end. IV achieves rapid systemic levels in a clinic setting. Subcutaneous injection trades onset speed for at-home continuity. Selection is provider-reviewed against the patient's goal, schedule, and tolerance.

Reviewed by Dr. Laura PurdyMay 29, 2026

Attribute

NAD+ IV

NAD+ Subcutaneous Injection

Setting

Clinic / infusion setting

At home, self-administered

Onset

Rapid systemic levels during the infusion

Slower absorption, more even daily curve

Cadence

Periodic loading sessions or maintenance infusions

Frequent low-dose, supports continuity

Tolerance

Higher peak — flush/discomfort during infusion is common; managed with infusion rate

Lower peak — typically better tolerated dose-for-dose

Continuity fit

Best when in-clinic experience or rapid restoration is the goal

Best when daily/weekly continuity at home is the goal

Choose NAD+ IV

IV is appropriate when rapid restoration, in-clinic experience, or a defined loading window is the goal.

Explore pathway

Choose NAD+ Subcutaneous Injection

Subcutaneous is appropriate when at-home continuity, gentler dosing curve, or schedule flexibility is the goal.

Explore pathway

Educational. Final pathway selection is provider-reviewed via synchronous video consultation against your biomarkers, history, and goals.

Frequently asked

Is one delivery more effective than the other?

Effectiveness depends on the goal. Total dose, cadence, and tolerance matter more than the delivery route alone.

Next step

Take the optimization assessment.

The adaptive assessment maps your symptoms, history, and goals to candidate pathways — and routes you into provider review.

Begin assessment