NAD+ shots, nasal sprays and IV infusions differ in delivery, supervision and what a quote covers. Seeing the same ingredient name doesn’t establish that the three routes deliver equivalent amounts or produce equivalent outcomes.
What each appointment or order involves
- Injection. A telehealth order may involve an injectable product supplied by a pharmacy. Ask who teaches you to use and store the exact product and who handles clinical questions after delivery.
- Nasal spray. The product is delivered through the nose. Ask what evidence exists for that exact formulation and whether the quote covers one bottle or a defined course.
- IV infusion. The solution is delivered into a vein. Ask who supervises the infusion, what’s in it, what one appointment costs and how many appointments the clinic proposes.
What kind of evidence should you ask for?
Ask for research on the exact route and outcome you care about. A study of oral precursors or a change in a laboratory marker can’t establish that a compounded nasal spray or injection will improve fatigue or recovery. Ask whether the evidence included a comparison group and tracked meaningful changes over time.
Check the safety and total bill
FDA has reported adverse reactions after injectable NAD+ and warned about ingredients unsuitable for sterile preparations. Ask about the dispensing pharmacy, what to do if the package arrives damaged, and which clinician can respond if you have a reaction. For a price comparison, write down the full package or appointment total and its duration. See our NAD+ injection cost guide for an example.
Read our NAD+ guide for the wider treatment overview.
Compare what the evidence actually measured
Ask whether the study used the same route, product and population as the offer. A change in a blood marker can tell you something about exposure. To understand whether a treatment helps with fatigue, function or another concern, look for a study that measured that outcome and compared it with an appropriate control. Human evidence for one formulation or a precursor does not establish the effect of an injectable, nasal or IV product sold by a particular clinic.
Who handles safety and follow-up?
With an infusion, ask who screens you beforehand, who monitors you during the appointment and what they can do if you have a reaction. If the clinic adds other ingredients, ask to see the complete list. For a prescription shipped to your home, ask who is responsible for the product label and shipping conditions, and who responds to symptoms after delivery. For a nasal spray, ask how the pharmacist expects the formulation to be used and what side effects would prompt a call.
Compare actual checkout totals and time commitments. List the initial assessment, delivery or administration, supplies, follow-up and number of proposed orders or visits. A per-visit IV quote and a multimonth shipment cover different services. See NAD+ cost examples and the injection buyer checklist.