Supplement Comparison
NMN vs NR: Which NAD+ Precursor Actually Works?
We analyzed what 5 longevity experts — Huberman, Attia, Patrick, Johnson, and Hyman — actually say about nmn vs nr (nicotinamide riboside). Here is where they agree and where they don't.
Split Consensus
on NMN & NAD+ overall
TL;DR — No consensus — most experts are skeptical or cautious
This is one of the most divisive topics. Attia says skip both — exercise and fasting boost NAD naturally. If you do supplement, NR has better safety data (Patrick), but NMN may have a cellular uptake advantage (Hyman's guests).
What Each Expert Actually Takes
Takes both NR (500mg) + NMN (1-2g)
Personally takes NR and NMN daily for subjective energy benefits. Explicitly states these are NOT taken for longevity. Also uses NAD+ IV infusions occasionally for post-illness recovery.
Neither — categorizes NAD as 'noise'
Most skeptical of all 5 experts. Classifies NAD supplementation as 'noise' on his evidence hierarchy — below rapamycin ('promising') and metformin ('fuzzy'). Cites ITP failure to show lifespan extension with NR.
Leans toward NR (better safety data)
Most balanced scientific coverage. Notes NR has more extensive safety data and is a reliable option. Warns that NMN may accelerate cancer growth in specific contexts. Both break down into nicotinamide, which can inhibit sirtuins.
Not in his protocol
Blueprint protocol does not include NMN or NR. His supplement stack focuses on glycine, creatine, CAKG, and other interventions. Notable absence given his comprehensive approach.
NMN (high-dose, 1000mg)
Most enthusiastic advocate. Hosts guests recommending high-dose NMN (1000mg) combined with ergothionine and resveratrol. Claims NMN has a specific cellular shuttle mechanism superior to NR.
Key Differences
FDA Status
NMN
Restricted — classified as investigational new drug, hard to buy
NR (Nicotinamide Riboside)
Available — commercially sold as dietary supplement (Niagen)
Safety Data
NMN
Limited human safety data. Cancer risk flagged by Patrick
NR (Nicotinamide Riboside)
More extensive safety data (Patrick). Generally well-tolerated
Cellular Uptake
NMN
May have specific shuttle mechanism for direct cell entry (Hyman's guests)
NR (Nicotinamide Riboside)
Requires conversion — enters cells, converts to NMN, then to NAD+
ITP Results
NMN
Not tested in ITP
NR (Nicotinamide Riboside)
Failed to extend lifespan in genetically diverse mice (Attia)
Expert Support
NMN
Hyman (strong), Huberman (personal use), Sinclair (via Huberman)
NR (Nicotinamide Riboside)
Patrick (leans toward), Huberman (personal use)
Cost
NMN
$60-120/month for quality product
NR (Nicotinamide Riboside)
$40-80/month for Niagen brand
What the Experts Said (Direct Quotes)
"The host takes NR (500mg) and NMN (1-2g) daily for subjective energy levels rather than longevity, noting that NMN is currently restricted as a commercial supplement due to FDA rulings."
AMA #12: Thoughts on Longevity Supplements (Resveratrol, NR, NMN, Etc.) & How to Improve Memory at 06:18
"NAD infusions are effective for recovery but are physically uncomfortable and expensive; the host uses them occasionally for post-illness fatigue."
AMA #12: Thoughts on Longevity Supplements (Resveratrol, NR, NMN, Etc.) & How to Improve Memory at 13:35
"Peter discusses the potential of rapamycin (promising), metformin (fuzzy), and NAD (noise), while dismissing resveratrol as nonsense, noting that these classifications evolve as new data emerges."
300-Special episode: Peter on exercise, fasting, nutrition, stem cells, geroprotective drugs, & more at 07:33
"NAD levels decline with age, leading to the popularity of NR and NMN as boosters. However, clinical evidence is mixed, and there is significant controversy regarding their bioavailability and efficacy."
NAD and NAD precursors: help or hype? | Peter Attia, M.D. & Matt Kaeberlein, Ph.D. at 05:04
"NAD+ levels decrease with age, which is associated with multiple hallmarks of aging including loss of proteostasis, mitochondrial dysfunction, glucose intolerance, and cellular senescence."
NAD+ in Aging: Role of Nicotinamide Riboside and Nicotinamide Mononucleotide at 00:32
"Concerns exist regarding dose translation, bioavailability, and potential negative effects, such as NMN accelerating cancer growth in specific contexts. The breakdown of boosters into nicotinamide, which can inhibit sirtuins, is also a consideration."
NAD+ in Aging: Role of Nicotinamide Riboside and Nicotinamide Mononucleotide at 03:23
"While NAD itself cannot easily cross cell membranes, precursors like NMN and NR can. NMN is considered superior because the body possesses a specific shuttle mechanism to transport it into cells."
How To BOOST Energy, Reduce Inflammation, And Live Longer! | Dr. Andrew Salzman at 15:35
"A combination of NMN, ergothionine, resveratrol, and hydroxy tyrosol creates a robust defensive team to combat aging. High-dose NMN (around 1000mg) is recommended to effectively suppress inflammatory pathways like NF-kappa B."
How To BOOST Energy, Reduce Inflammation, And Live Longer! | Dr. Andrew Salzman at 33:04
Bottom Line
This is genuinely unresolved. The most credentialed skeptic (Attia) says skip both and prioritize exercise and fasting, which naturally boost NAD+. The most enthusiastic advocate (Hyman) recommends high-dose NMN. Patrick provides the most balanced view: if you supplement, NR has better safety data, but both break down into nicotinamide which can paradoxically inhibit the sirtuins they are supposed to support. Huberman takes both but openly admits it is for subjective energy, not proven longevity. The consensus score of 2.3/5 reflects genuine expert disagreement. If you are healthy and exercise regularly, the evidence does not support spending $60-120/month on either. If you have metabolic dysfunction or want to experiment, NR is the safer starting point.
Consensus Protocol — NMN & NAD+
Dosage
NMN: 250-1000mg daily (Sinclair via Huberman: 1g; Hyman guests: 1000mg; Huberman personal: 1-2g). NR: 300-500mg daily (Huberman personal: 500mg). No consensus dosage exists.
Form
NMN sublingual or capsule. NR (as Niagen) is the most studied form. NAD+ IV infusions used occasionally for acute recovery (Huberman). Stability and bioavailability vary significantly between products.
Timing
Morning dosing is most common. Sinclair emphasizes pulsatile dosing — cycling on and off rather than continuous daily use. Take with food containing fat for resveratrol co-supplementation.
Notes
NMN is currently restricted as a commercial supplement due to FDA rulings classifying it as an investigational new drug. NR remains available. Exercise and fasting are proven to naturally boost NAD levels and should be prioritized over supplementation. There is no consensus among our 5 experts that supplementation is necessary or beneficial for healthy individuals.
Now you know which form. Get the full protocol.
Exact dosages — what each expert recommends, not just which form
Daily schedule — morning vs evening, what to pair with food, what to separate
Expert watchdog — get alerted when an expert changes their recommendation
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