NAD+ injection vs. oral drops vs. nasal spray: How the delivery methods differ

Introduction: One molecule, three delivery routes

If you've decided to explore NAD+ with a provider, a practical question follows: how should it be delivered? Luvo's Longevity Program offers three options: injection, oral liquid drops, and nasal spray. Each has different absorption characteristics and different practical trade-offs.

This is an educational overview of how the routes differ. It isn't medical advice, and it isn't a promise of any particular result.

Injection

Injected NAD+ is given under the skin or into muscle, bypassing the digestive tract entirely. Because it doesn't pass through the GI tract or undergo first-pass liver metabolism, a higher proportion of the administered dose reaches the bloodstream compared with oral routes. That is a pharmacokinetic point about absorption, not a claim about how you will feel.

The practical considerations are comfort with self-administration and following storage instructions. A provider sets the schedule.

Oral liquid drops

Oral liquid drops are used sublingually, placed under the tongue and held briefly before swallowing. This allows a portion to absorb through the mucous membranes of the mouth, which partially bypasses digestive breakdown, and a liquid is easier to dose precisely than a solid supplement.

Absorption by this route is generally lower than by injection, since some of the dose is still lost to digestion. The main practical advantage is simplicity: no needles and an easy daily routine.

Nasal spray

Nasal spray delivers NAD+ across the nasal mucosa, a thin, well-vascularized tissue, which allows relatively rapid absorption into the bloodstream. Absorption by this route generally falls between injection and oral drops.

Intranasal delivery of various molecules is an area of ongoing research, including questions about access to the central nervous system, but the evidence specific to intranasal NAD+ is still developing. We won't claim cognitive or neurological effects on that basis. The practical advantages are that it's needle-free and quick to use.

How the choice is made

There's no single best route. The differences are in absorption profile and daily practicality, and the right option depends on your situation and preferences. Which method, dose, and frequency is appropriate is determined by a licensed provider based on your health history and goals.

Explore Luvo's NAD+ options: injection, oral liquid drops, and nasal spray, or visit the Longevity Program.