NAD+ IV Drips: What the Infusion Studies Recorded

Picture the offer landing on a Thursday afternoon: a wellness studio’s package of four NAD+ drips over four days, pitched for energy and focus, with a recliner, a warm blanket, and a price that makes you stop scrolling.

NAD+ is a real molecule, and the menu makes the drip sound like a direct refill. Before you book, it helps to know that a few published studies have actually watched people receive NAD+ through a vein. What they recorded is narrower, and less comfortable, than the brochure suggests.

What researchers saw during NAD+ infusions

NAD+ (nicotinamide adenine dinucleotide) is a coenzyme every cell uses to make energy. That part is settled biology. The open question is what happens when it is dripped straight into the bloodstream, and whether that changes how anyone feels.

The first human study to track the chemistry was a 2019 pilot in Frontiers in Aging Neuroscience. Eleven healthy men took part: eight received a six-hour NAD+ infusion and three received saline. The surprise was that blood NAD+ did not budge for the first two hours. The researchers concluded the body was clearing or breaking down the infused NAD+ about as fast as it arrived. Only by the six-hour mark had blood levels and breakdown products climbed. No adverse events were observed during that slow, fixed-speed drip.

Two details matter for a reader. The study measured blood and urine chemistry, not energy, memory, or aging. And its funding and conflict statements show it was partly paid for by an NAD+ research company, with one author directing both that company and the wellness center where the infusions were given.

A 2026 study in Frontiers in Aging looked at a commercial studio where clients set their own drip speed. Researchers reviewed records for six people who had four days of NAD+ infusions and eight who received nicotinamide riboside (NR), a related precursor, by IV. Every NAD+ client reported moderate to severe symptoms during the drip: abdominal cramping, nausea, vomiting, diarrhea, a faster heart rate, and chest pressure. The symptoms stopped when each infusion ended, but they stretched the average drip time to about 97 minutes, compared with about 37 for NR. The authors, who worked for the wellness company, called the results preliminary and pointed out there was no placebo group.

A randomized, double-masked trial registered on ClinicalTrials.gov compared IV NR, IV NAD+, oral NR, and saline in 53 adults, and listed how long people could comfortably tolerate the infusion as one of its outcomes. The registry still shows its status as unknown, and the trial was organized by a nutraceutical research institute testing a branded NR product.

What none of these studies answer

Not one of these studies tested whether an NAD+ drip makes people more energetic, sharper, or slower to age. The groups were tiny, follow-up was short, and much of the work was run or paid for by businesses that sell infusions or NAD-related products. The few lab changes reported in 2026 pointed in mixed directions and were labeled exploratory by the authors themselves.

Put plainly, the record so far shows three things. IV NAD+ can raise NAD-related markers in blood. In the small studies so far, many people found the drip unpleasant enough to slow it down. Clinical benefits remain unmeasured.

Questions to ask before you book. Which benefit is being promised, and which human study tested it? Who prepares the IV bag, and is the product compounded? How will staff watch your heart rate and symptoms, and what happens if you feel chest pressure? Vague answers are an answer. And if tiredness, brain fog, or low mood is what sent you looking, a visit with a clinician who can check for common, treatable causes is a better first stop than a drip chair.

Not medical advice.

Before Booking an NAD+ IV Drip, Read What the Infusion Studies Recorded

What researchers saw during NAD+ infusions

What none of these studies answer

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