NAD+ Shots vs. NAD+ Infusions: The Real Differences — and How to Choose

NAD+ shots and NAD+ infusions deliver the same molecule — nicotinamide adenine dinucleotide — by two very different routes. A shot is a quick injection into muscle or the tissue just beneath the skin, done in minutes and carrying a comparatively small dose; an infusion feeds a much larger dose directly into the bloodstream, slowly, over roughly two to four hours. Neither is simply “the better one”: the right choice comes down to dose, time, cadence, and how your body responds, which is why it ends up being a conversation with a licensed provider rather than a coin flip.

Few questions come up more often at our clinic on San Vicente Boulevard than this one. NAD+ has migrated from longevity-lab jargon to a fixture of Los Angeles wellness culture, and most of what is written about the shot-versus-drip decision is thinly veiled sales copy that ends, predictably, with whichever service the writer sells. What follows is the comparison we would want to read ourselves: what each format actually involves, what the pharmacology research shows, and a clear framework for choosing.

First, what NAD+ actually is

NAD+, short for nicotinamide adenine dinucleotide, is a coenzyme present in every living cell, where it shuttles electrons through the chemical reactions that turn food into usable energy. It also participates in DNA repair and in how cells respond to stress. That much is textbook biochemistry, not wellness marketing. As the Cleveland Clinic explains, NAD levels naturally decline with age as some cells begin using the molecule faster than the body replaces it.

Here is the distinction that matters before comparing anything: the biology of NAD+ inside your cells is established science. Whether adding NAD+ from the outside — through an IV, an injection, or oral precursor supplements — meaningfully changes how you feel or age remains an open research question, studied so far mostly in small trials. NAD+ is not an FDA-approved drug for treating any condition. At IV Glow Bar, as at any responsible practice, it is offered as provider-supervised wellness support, not as medicine for a diagnosis.

The NAD+ shot: small dose, small footprint

An NAD+ shot is an intramuscular or subcutaneous injection that takes minutes from check-in to done, delivering a fraction of an infusion’s dose — commonly measured in tens of milligrams rather than hundreds. There is no IV line, no chair time, and no afternoon to clear.

That compactness shapes how shots are used. Because each injection is modest, practices generally offer them as a recurring rhythm — often weekly — rather than as a single event, letting smaller amounts arrive on a schedule you will actually keep. The dose absorbs gradually from muscle or subcutaneous tissue, though formal absorption studies of injected NAD+ are scarce; that is worth knowing before anyone quotes you precise percentages.

Shots suit people testing the waters, anyone maintaining between infusions, and, candidly, most busy calendars. At IV Glow Bar, the NAD+ shot is administered by our registered nurse after a health intake review, either in the clinic or as part of a concierge visit.

The NAD+ infusion: the full dose, deliberately slow

An NAD+ infusion delivers a substantially larger amount — commonly several hundred milligrams — through an IV line, drop by drop, across roughly two to four hours. The unhurried pace is not ceremony; it is pharmacology.

The best pharmacokinetic data available comes from a 2019 pilot study published in Frontiers in Aging Neuroscience, in which researchers infused 750 milligrams of NAD+ over six hours in healthy men and measured plasma levels throughout. The striking finding: circulating NAD+ did not rise above baseline until after the two-hour mark. In the early hours, the infused molecule was cleared from plasma essentially as fast as it arrived — consistent with rapid uptake into tissues, rapid metabolism, or both — before levels eventually climbed roughly 400 percent by hour six.

Two practical lessons follow. First, drip rate matters. When NAD+ runs too fast, people commonly report flushing, chest tightness, queasiness, or cramping, and these sensations typically ease once the rate slows — so a nurse who paces the drip to your comfort is a feature of the format, not an inefficiency. Second, a bigger number on the bag is not a promise: raising blood levels is not the same as proving downstream benefits, and a responsible clinic will say so plainly.

At IV Glow Bar, the NAD+ infusion is placed and monitored by our registered nurse, in-clinic on San Vicente Boulevard or through concierge visits across Beverly Hills, West Hollywood, and the surrounding Westside. The drip works the same at your home, office, or hotel as it does in our chairs.

Where the evidence actually stands

The cellular role of NAD+ is established; the clinical benefits of NAD+ shots and infusions are not yet proven. The literature to date consists of small pharmacokinetic and tolerability studies of intravenous NAD+, alongside trials of oral precursors such as nicotinamide riboside showing they can raise blood NAD+ levels — with the larger outcome trials that would settle the question still ahead. Anyone guaranteeing results from NAD+ therapy is running ahead of the data.

What a supervised setting does offer is safety infrastructure: a health intake review before your first session, a licensed provider deciding whether NAD+ is appropriate for you at all, sterile technique, and someone watching how you actually respond and adjusting. Individual response varies, and that variation is precisely why supervision matters more here than in better-mapped corners of wellness.

How to choose between them

Let dose, time, and cadence decide. An infusion delivers the most NAD+ per session but asks for a real block of your calendar; a shot delivers far less per visit but takes minutes and repeats easily. If you are new to NAD+ or short on hours, a shot is a sensible introduction. If you want the full-dose session, book the infusion and treat the time as enforced rest — or have it arrive as a concierge visit so the hours are yours anyway. Many regulars settle into a hybrid rhythm, with periodic infusions and shots in between. And if an infusion felt rough somewhere else, the answer is often a slower rate or smaller dose rather than abandoning the format.

None of this needs deciding alone. Eligibility and dosing are determined by a licensed provider after reviewing your health history, and the plan should bend to your goals rather than to a menu. Our overview of IV therapy at IV Glow Bar covers the broader drip menu, and our Los Angeles NAD+ IV guide goes deeper on costs, session logistics, and how to vet any provider — including us.

Questions we hear most

Are NAD+ shots as effective as an infusion?

No head-to-head study has compared them, so the truthful answer is that nobody knows precisely. The two differ in dose by roughly an order of magnitude and in how they enter circulation, which is why providers usually frame shots as maintenance and infusions as the fuller session rather than as interchangeable equivalents.

Why does an NAD+ drip take so long?

Comfort and chemistry. Run quickly, NAD+ commonly causes flushing, queasiness, or chest pressure; run slowly, most people sit comfortably. The 2019 pharmacokinetic study also suggests the body is actively clearing and absorbing NAD+ throughout the session — a slow drip works with that reality rather than against it.

How often do people get NAD+ shots or infusions?

There is no clinically established schedule. In practice, cadence is set by goals, response, and budget: weekly-ish shots and infusions spaced weeks or months apart — sometimes as a short series — are common patterns. Your provider will suggest a starting rhythm at your intake and adjust from there.

Can I get an NAD+ infusion at home in Los Angeles?

Yes. Our registered nurse brings the full setup to homes, offices, and hotels in Beverly Hills, West Hollywood, and the surrounding Westside neighborhoods, with the same screening and supervision as an in-clinic visit.

If you are still torn between the two, that is a fine place to be — it is a short conversation, not a commitment. Book a visit, or call or text 310-579-6779 (WhatsApp: 323-875-8203), and we will talk through what fits your schedule and goals.

NAD+ services at IV Glow Bar are administered by our registered nurse under the oversight of our medical director, Dr. Groke. Meet our licensed providers.

Photo courtesy of Camila Mofsovich on Unsplash.

Medical disclaimer: This article is for general information only and is not medical advice. These services are not suitable for everyone; a health intake review is required, and treatment decisions are made by a licensed provider after clinical evaluation. Individual response varies, and no outcome is guaranteed.