NAD+ injections for energy and longevity: what the research actually shows

What did @projectbiohackedjeff actually say?

Jeff argued that the commonly suggested NAD+ titration schedule of 25 mg twice weekly is "a very long delayed way" to assess the compound's effects. His preferred alternative: start at 25 mg subcutaneously or intramuscularly, then escalate daily until you either feel benefits or hit a tolerance ceiling. He called this a loading approach, comparing it to the high-dose IV infusion protocols used in clinical settings, where patients receive roughly 500 mg per day over four to five consecutive days. He also claimed that 85 to 90 percent of people in his online community respond well, and that NAD+ injections produce noticeable energy within 45 to 90 minutes. He cited personal use for six years, including high-dose IV infusions during an anxiolytic taper.

He also claimed NAD+ can reset caffeine sensitivity, support ADHD focus, and help people using GLP-1 receptor agonists, though he did not explain the mechanism for any of those uses.

Does the science back this up?

Partially, but the gaps matter. NAD+ precursors and direct NAD+ administration do raise intracellular NAD+ levels, which is biologically meaningful. The loading-dose rationale has some logic behind it, but calling it "what all the major experts are doing" overstates the consensus.

A 2023 review by Mehmel et al. in Nutrients confirmed that intravenous NAD+ administration reliably increases circulating NAD+ and has shown promising signals in addiction medicine and neurodegenerative contexts. The problem is that most of the human data comes from IV infusion studies, not subcutaneous or intramuscular injection. Bioavailability, pharmacokinetics, and optimal dosing for SubQ or IM routes are not well-characterized in published literature. A 2021 study by Martens et al. in Nature Aging used oral NMN supplementation and showed measurable NAD+ elevation in skeletal muscle, but translating IV or oral findings directly to injection protocols is a stretch the evidence does not fully support yet.

The 45-to-90-minute energy window Jeff describes is plausible if NAD+ is influencing mitochondrial electron transport, but this has not been rigorously timed in controlled human trials for injection routes specifically.

What did they get wrong (or right)?

He got the core biology roughly right. NAD+ is a coenzyme central to cellular energy metabolism, and declining NAD+ levels with age are documented. Restoration strategies are an active research area. Credit where it is due.

What he got wrong, or at least unsupported: the claim that his daily escalation approach is backed by "all the major experts" doing NAD+ IV infusions. Clinical IV loading protocols exist, but they are supervised, involve different administration kinetics, and the clinical literature does not validate copying that logic onto unsupervised home injection escalation schedules. His 85-to-90-percent response rate comes from self-selected community polls, not a study. That is not data. That is selection bias wearing a lab coat.

His assertion that "there's no evidence" the gradual titration approach is optimal is technically correct, but the same applies to his own protocol. Neither is validated in randomized controlled trials for SubQ or IM delivery. Calling the slow titration "crap" while presenting his escalation as superior is not a scientific argument. It is a preference.

The ADHD and GLP-1 claims are speculative. There is early mechanistic interest in NAD+ and neurological function, but no clinical trials supporting it as an ADHD intervention or a GLP-1 adjunct.

What should you actually know?

NAD+ therapy is not regulated the same way pharmaceutical drugs are. Compounded NAD+ injectables fall into a gray zone, and quality, sterility, and concentration accuracy vary by compounding pharmacy. That matters when someone is self-injecting at escalating doses based on a TikTok protocol.

The side effects Jeff mentions, including flushing and elevated heart rate, are real and documented even at moderate doses. They are generally transient, but "generally" is doing a lot of work when you are home alone escalating doses daily without medical oversight.

If you are interested in NAD+ therapy, the appropriate path is a licensed provider who can assess your baseline health, screen for contraindications, and monitor your response. FormBlends works with licensed clinicians who can evaluate whether NAD+ or a precursor like NMN or NR is appropriate for you, at doses and delivery routes that reflect current evidence rather than community poll data.

Jeff's enthusiasm is genuine, and his six years of personal use give him a real-world perspective. But personal experience in a self-selected biohacker community is not a clinical trial. Do not escalate injectable doses daily at home because someone on TikTok said it works faster.