NAD+ supplements and 'cellular wellness': what TikTok gets wrong

What did @dreasdailydeals actually say?

Mostly, she sold a discount. The health claim in this video is a single sentence buried in a sales pitch: if you're "tired of feeling rundown" and want to "feel more refreshed," you should buy this NAD+ product before the sale ends today. That's it. No mechanism explained, no dosage mentioned, no ingredient panel shown. The video is a TikTok Shop haul, not a wellness tutorial, which matters when you're evaluating what's actually being claimed versus what's being implied.

To her credit, she didn't claim NAD+ cures anything specific. She didn't invoke longevity science or mention sirtuins or mitochondria. The vagueness is intentional, probably by design, but it also means the bar she set for herself is low enough that she mostly clears it. What she implied, though, is that this product will meaningfully improve how you feel, and that's where things get complicated.

Does the science back this up?

The honest answer is: somewhat, in specific contexts, and not necessarily from an oral supplement. NAD+ (nicotinamide adenine dinucleotide) is a real coenzyme involved in cellular energy metabolism, DNA repair, and mitochondrial function. Levels do decline with age. But whether an oral NAD+ supplement meaningfully raises tissue NAD+ levels in healthy adults is still genuinely contested.

Most of the compelling human data comes from precursor supplementation, specifically NMN (nicotinamide mononucleotide) or NR (nicotinamide riboside), not NAD+ itself. A 2023 randomized controlled trial by Yoshino et al. published in Science found that NMN supplementation improved muscle insulin sensitivity in postmenopausal women with prediabetes, a specific population with a specific outcome. A 2020 study by Martens et al. in Nature Communications showed NR raised blood NAD+ levels in older adults, but functional benefits were modest. Direct oral NAD+ faces an absorption problem: it is largely degraded in the gut before reaching circulation. The product in this video was not identified clearly enough to know what form of NAD+ it contains.

What did they get wrong (or right)?

She got the framing directionally plausible but contextually thin. NAD+ precursors have legitimate emerging research behind them, and fatigue and energy metabolism are genuinely connected to NAD+ biology. So the intuition isn't fabricated from nothing.

What she got wrong, or at least what she omitted, is significant. First, the form matters enormously. Oral NAD+ itself has poor bioavailability compared to NMN or NR. Second, "feeling rundown" is a symptom with dozens of causes, and NAD+ supplementation is not a broad-spectrum fix. Third, the urgency framing, "the sale ends today," is a pressure tactic that has no relationship to whether the product works. Scarcity marketing and supplement efficacy are two completely separate things, and blending them is misleading even if unintentional.

She also never disclosed whether she was compensated for this post. Given the TikTok Shop affiliate structure and the triple-discount setup she described, it is reasonable to assume she earns a commission. That context should be visible to viewers evaluating her recommendation.

What should you actually know?

If you are genuinely interested in NAD+ biology, the research is real and worth following, but you should know what you're actually buying. Look for products containing NMN or NR, which have more human trial data than NAD+ itself. Sublingual or IV NAD+ delivery methods bypass the gut absorption problem, but those carry different cost and access considerations and should involve a clinician.

The "tired and rundown" problem this video targets is also worth taking seriously on its own terms. Chronic fatigue can reflect sleep issues, iron deficiency, thyroid dysfunction, or mood disorders, none of which an NAD+ supplement addresses. Before spending money on a supplement, it is worth ruling out the common and treatable causes of fatigue with a basic blood panel.

• NAD+ precursor research is legitimate, but it applies to specific populations and contexts.
• Oral NAD+ bioavailability is lower than NMN or NR, and form matters.
• A sale deadline is not a clinical reason to buy a supplement.
• Vague energy claims are legal to make but not evidence of efficacy.