NAD+: formats, evidence and provider reviews

Keep the ingredient and the route together

NAD+ appears across a wide range of offers, from clinic infusions to products delivered for home use. Start by recording the ingredient and format together. An “NAD” label alone does not tell you whether you are comparing the same substance, delivery route or service.

Use the format explorer to narrow the directory. If a listing instead names NR or NMN, move to the corresponding ingredient entry rather than treating it as another version of the same NAD+ appointment. Our side-by-side ingredient guide explains the terminology.

What the infusion pilot can tell you

A 2019 pilot followed eight men receiving NAD+ by six-hour IV infusion and three receiving saline. It tracked blood and urine metabolites through eight hours. This was a small metabolism study, not a demonstration of improved energy, cognition or lifespan. ^[1]

Our close reading of the infusion study explains what was sampled and what remains unanswered. An infusion paper also does not directly test a nasal product, a capsule or repeated home injections. When a claim cites research, match the study’s intervention to the product being sold.

The questions depend on the delivery format

For a clinic appointment, compare the full visit price, screening process, expected time at the location and cancellation terms. For a delivered prescription, ask about the clinical evaluation, dispensing pharmacy, storage instructions, refill process and the contact for a damaged shipment. The injection-versus-infusion guide works through these practical differences.

FDA has warned about unsuitable ingredients used in sterile compounding, including NAD+ products associated with reactions consistent with excessive endotoxins. Ask about the specific finished product rather than relying on a broad quality slogan. ^[2] Read our route and compounding explainer for the regulatory context.

Compare a complete course of spending

A per-visit rate, a multi-visit package and a recurring home-delivery charge are different units. List the amount due today, the time or quantity included and the next payment. Add travel or appointment time separately if those affect your choice; neither convenience nor a higher price establishes a clinical benefit.

Our cost worksheet makes these comparisons without assuming that one format is therapeutically equivalent to another. Keep any benefit claim beside the research that directly tested it, rather than folding the claim into a price ranking.

NAD+ services and products to compare

These listings contain NAD+ itself. Formats differ across services; the matching formats below are drawn from each review. Listed alphabetically, not ranked.