Nasal SprayFrom $166/mo
InjectionFrom $166/mo
Medically reviewed by Vanessa Niles, R.N., M.D., F.A.C.O.G. —
The short answer
Neither has been shown to work better. Injections deliver a measured dose under the skin; nasal spray is needle-free and takes seconds. Choose based on comfort with needles, routine and how you tolerate each, with your provider's input.
- No trial has compared NAD+ nasal spray with injections.
- Spray: no needles, daily use, nasal irritation possible.
- Injection: measured dose, small needle, site reactions possible.
- Same price at NADMedics, so pick what fits you.
How they compare
The spray is absorbed through the nasal lining; the injection goes into the fat under the skin. How much NAD+ reaches the bloodstream by either route hasn't been well measured in people, and we found no published human trials of intranasal NAD+.
- Needles: spray none; injection a small, fine needle
- Time: spray a few seconds; injection about a minute
- Common side effects: spray stinging or a runny nose; injection site soreness and flushing
- Storage: both follow the pharmacy label, often refrigerated
When the spray may suit you
If needles are a deal-breaker, you travel often or you want the simplest routine.
Side by side
Spray or shot
Two routes, one price. Your provider helps you decide, and you can switch later.
When the injection may suit you
If you're comfortable with a small needle and want a dose measured precisely each time.
NAD+ terms used in this guide
Questions
Questions people also ask
Can I switch from spray to injection later?
Yes. Talk to your provider; switching is common and the price is the same.
Can I use both?
Only if your provider prescribes it. Don't combine forms on your own.
Which has fewer side effects?
They differ rather than one being milder: the spray tends to irritate the nose, the injection the skin.
Which is easier when I travel?
Usually the spray: no needles or sharps container to pack. Either way, follow the storage line on your label.
What strengths are they?
The nasal spray is 30 mg per 0.1 mL in a 15 mL bottle. The injection is 200 mg/mL in a 5 mL vial.
Do they cost the same?
Yes. Both forms have the same plans: $199 for 1 month, $349 for 2 months or $499 for 3 months ($166/mo).
Keep reading
Related NAD+ guides
- NAD+ Nasal Spray Effectiveness: Does It Really Work Well?Does NAD+ nasal spray work? See what research shows about intranasal NAD+, why human trials are missing and how to judge whether it's worth trying.NAD+ nasal spray
- NAD+ Injections vs IV: Which Delivery Method Is Best for YouNAD+ injections vs IV drips: compare time, setting, cost, side effects and research, including what pilot studies found about IV NAD+. Not proven better.NAD+ injections
- NAD+ Nasal Spray Dosage: How Much Should You Really Use?How much NAD+ nasal spray should you use? Learn how sprays per day are set, how to work out mg per spray from your label and how to use the pump right.NAD+ nasal spray
Official sources
Sources and official resources
Official government and research sources behind this page, so you can check the facts yourself.
- MedlinePlus (National Library of Medicine)How to Use Nasal Sprays
General steps for using a nasal spray correctly.
- MedlinePlus (National Library of Medicine)Subcutaneous (SQ) injections
Step-by-step guide to giving a shot into the fatty tissue under the skin.
- Experimental & Molecular MedicineYoo et al. Therapeutic effect of intranasal nicotinamide adenine dinucleotide in the restoration of olfactory dysfunction (2026)
Laboratory and mouse study of intranasal NAD+; not a human trial.
- U.S. Food and Drug AdministrationCompounding and the FDA: Questions and Answers
What compounded medicines are and why they aren't FDA-approved.
- U.S. Food and Drug AdministrationMedWatch: The FDA Safety Information and Adverse Event Reporting Program
Where patients can report side effects or problems with a medicine to the FDA.
Medically reviewed by Dr. Vanessa Niles, R.N., M.D., F.A.C.O.G., on October 12, 2026. This article is general education, not medical advice. NAD+ has no FDA-approved use, and compounded NAD+ is not FDA-approved or evaluated by the FDA for safety or effectiveness. Only your provider can set your dose.
Talk it through with a provider
Book a free online consultation. If NAD+ fits, a licensed U.S. provider prescribes the nasal spray or injection, with plans from $166 a month.
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