NAD

NAD-related supplements may increase perceived energy, but evidence that they extend human lifespan is not conclusive.

1. Ways to raise NAD: People use IV NAD, oral NR, or sublingual NMN. Their effectiveness is not fully established, and IV infusions can be uncomfortable. 1 2
2. IV infusion cost: NAD infusions were described as costing about $300–$1,000 per drip. 3
3. Personal experience: Huberman said he takes NR and NMN and notices more sustained energy, without finding that it prevents him from falling asleep. He emphasized that this is subjective experience, not clinical evidence. 4 5
4. NMN availability: Huberman said an FDA ruling made NMN unavailable for commercial sale as a supplement, though he noted it could still be found on the market. 6
5. Longevity evidence: Human lifespan benefits remain uncertain; the discussion noted that studies showing supplements raise NAD levels do not demonstrate longer lifespan or other tangible aging outcomes. 7