NAD injections vs. pills vs. IV: What the evidence actually says

What did @peaches.wanko actually say?

Honestly, not much, at least not in the transcript. The caption does the heavy lifting here, claiming that pill and liquid NAD+ "cannot compare" to injections, that IV NAD+ is the gold standard, and that results are "1000% no lie guaranteed." The actual spoken content is just enthusiasm: "I'm obsessed, okay? I'm obsessed. I can't think about anything else." That is not a clinical argument. It is a vibe.

To be fair, the caption does reflect a real debate in the NAD+ space about delivery methods and bioavailability. The problem is the claims go well past what the evidence supports, and the word "guaranteed" attached to a biological outcome is a red flag regardless of the substance being discussed.

Does the science back this up?

Partially, and with significant caveats. There is legitimate science suggesting that oral NAD+ precursors like NMN and NR raise blood NAD+ levels, but the degree to which that translates into clinical outcomes is still being worked out. IV and injectable routes do bypass first-pass metabolism, which matters.

A 2023 study by Lautrup et al. in Nature Aging confirmed that NAD+ precursor supplementation can meaningfully raise circulating NAD+ in humans. However, the same researchers noted that tissue-level uptake, particularly in the brain and muscle, does not scale linearly with blood levels. A randomized controlled trial by Dollerup et al. (2018, Cell Metabolism) found NR supplementation raised NAD+ metabolites in blood without significant metabolic benefit in the primary endpoints tested. For IV NAD+, there is very limited peer-reviewed RCT data. Most support comes from case reports and open-label protocols, particularly in addiction medicine contexts.

So yes, route of administration affects bioavailability. No, that does not automatically mean injections produce better results in every person for every goal.

What did they get wrong (or right)?

Right: The general claim that injectable or IV NAD+ may outperform oral forms in terms of blood NAD+ elevation has some biological plausibility. Subcutaneous and IV delivery do sidestep gut absorption variability.

Wrong: "Guaranteed best thing Man ever made" is not a scientific claim, it is marketing language, and it should be read that way. There is no peer-reviewed study comparing injectable NAD+ to oral forms with outcomes that justify the word "guaranteed" in any context. NAD+ supplementation also does not work the same for everyone. Factors like baseline NAD+ status, age, NAMPT enzyme activity, and underlying health conditions all affect response. Claiming otherwise is misleading.

Also wrong: The dismissal of oral forms as incomparable is overstated. A 2022 study by Yi et al. in Nature Communications showed that oral NMN bioavailability in humans is meaningful, with measurable increases in muscle NAD+ levels, not just blood. That does not mean pills equal injections, but "cannot compare" is too strong a conclusion.

What should you actually know?

NAD+ is a real molecule with real biology behind it. It plays a role in mitochondrial function, DNA repair, and cellular energy production. The research on supplementation is genuinely interesting, and it is moving fast. But interesting is not the same as proven.

If you are considering NAD+ supplementation in any form, here is what actually matters: your baseline NAD+ status (which you can test), your specific goals, and whether you have access to a clinician who can monitor your response. Injectable NAD+ is not available over the counter for good reason. It requires proper sourcing, sterility, and medical oversight.

The "obsessed" framing in this video is also worth naming directly. NAD+ can produce noticeable subjective effects, particularly via IV infusion, including energy and mood changes. That does not make it addictive in a clinical sense, but self-reported obsession is not a safety signal to ignore either. Talk to a provider before chasing a feeling.