NAD+ injections vs. Protandim: separating hype from evidence

What's this video probably claiming?

Based on the caption, this creator is pushing several distinct ideas at once. First, that NAD+ is a powerful anti-aging molecule worth injecting. Second, that oral NAD+ supplementation is useless because your gut can't absorb it. Third, that Protandim NAD, a commercial supplement from LifeVantage, sidesteps that absorption problem entirely by stimulating your body to produce its own NAD+ the way it supposedly did in infancy. The framing around injections, combined with hashtags tied to peptide therapy clinics, suggests this is promotional content connected to a NAD+ clinic and a Protandim affiliate sales structure. The "like when you were 1" line is a classic anti-aging marketing hook, implying you can restore infant-level cellular function. That's a significant claim that deserves serious scrutiny, not a TikTok caption.

What does the science actually show?

NAD+ does decline with age. That part is documented. Massudi et al. (2012, PLOS ONE) showed measurable NAD+ decline in human tissue with advancing age, and Yoshino et al. (2021, Science) demonstrated that NMN supplementation raised muscle NAD+ levels in postmenopausal women after 10 weeks. But raising NAD+ levels in a blood draw or muscle biopsy is not the same as reversing aging. The oral bioavailability question is more complicated than the creator suggests. Trammell et al. (2016, Nature Communications) found that NR, a NAD+ precursor, is orally bioavailable and does raise blood NAD+ metabolites in humans at doses of 100-300mg. So the flat claim that "you can't absorb oral NAD" is an oversimplification. Direct NAD+ itself absorbs poorly, but precursors like NMN and NR do work orally. IV NAD+ delivers higher plasma concentrations, but strong clinical evidence comparing IV to oral precursors in humans is thin.

Where does the social media noise diverge from clinical reality?

The Protandim NAD claim deserves its own flag. Protandim is not a NAD+ precursor supplement. It is marketed as an Nrf2 activator, meaning it purportedly activates a pathway that influences antioxidant gene expression. The NAD-specific version leans on the idea of activating your own production rather than supplying a precursor. The clinical evidence for Protandim specifically is weak. A randomized trial by Bayliss et al. (2016, Free Radical Biology and Medicine) found Protandim reduced oxidative stress markers in healthy adults but showed no significant functional outcomes. Comparing Protandim's mechanism to the systemic NAD+ elevation achievable through IV infusions or high-dose NMN is a stretch. These are different mechanisms, different magnitudes of effect, and one is being sold through a multi-level marketing structure, which should raise immediate flags about incentive alignment for any creator promoting it.

What should you actually know?

If you are genuinely interested in NAD+ as a longevity tool, the honest summary is this: the biology is real and interesting, the human clinical data is still early-stage, and the commercial ecosystem around it is heavily monetized. IV NAD+ infusions at clinics typically run 500-1000mg per session and cost hundreds of dollars, with limited peer-reviewed data on whether that beats optimized oral NMN or NR at a fraction of the cost. Martens et al. (2023, Nature Aging) found 1g daily NMN improved muscle function and NAD+ levels in older adults over 12 weeks without IV delivery. The "like when you were 1" framing is not supported by any published human trial. No study has shown that any NAD+ intervention restores infant-level NAD+ metabolism or meaningfully reverses biological aging in humans. Approach creators selling both clinic injections and MLM supplements in the same breath with proportional skepticism.