Mitochondrial function underlies everything from physical stamina to cognitive sharpness. Dr. Jason Schuster explains why supplementing with NMN and NR can replenish NAD⁺, the co‑factor that powers the cell’s energy factories, and why that matters for healthy aging.
NMN & NR explained
NMN (nicotinamide mononucleotide) and NR (nicotinamide riboside) are the first two molecular precursors to NAD⁺, the essential co‑enzyme for cellular metabolism. Dr. Schuster describes them as “natural vitamin B derivatives that are present in every cell” and highlights that they are considered among his favorite longevity supplements.
From supplement to NAD⁺
Both compounds are lipophilic, so coating them in fat improves absorption and protects them from stomach acid. Once inside the bloodstream, NR converts to NMN, which is small enough to cross the cell membrane. Inside the cell, NMN is then transformed into NAD⁺, enabling the mitochondria to generate ATP.
- NR → NMN → NAD⁺ inside cells
- NMN can cross the cell membrane directly; NAD⁺ cannot
- Fat‑coated formulations (e.g., Thorn NR capsules) increase bioavailability
- Elevated NAD⁺ fuels mitochondrial electron transport and ATP production
Why boost NAD⁺
Dr. Schuster points out that higher cellular NAD⁺ levels support a range of health outcomes. By supplying more electrons for mitochondrial energy production, NAD⁺ helps maintain ATP levels, protect DNA, and activate sirtuin pathways linked to longevity.
- Improved mitochondrial energy and stamina
- Enhanced DNA repair and telomere maintenance
- Potential reductions in age‑related cardiovascular risk
- Observed increases in health‑span markers in mouse studies
Practical intake
In his own regimen, Dr. Schuster takes 830 mg of NR (two Thorn capsules) and 1 g of NMN powder each day. He mixes the NMN powder with a fatty medium such as kefir, yogurt, or chocolate milk to maximize absorption. He reports no severe adverse effects, only occasional mild energizing or fidgetiness at very high doses.
- NR: 830 mg per day (Thorn capsules, 45 mg each)
- NMN: 1 g per day (Renew by Science powder)
- Combine NMN with a fat‑rich beverage for better uptake
- Safety: No serious side effects reported in animal or human studies; occasional mild excitement at high doses
“Taking NMN and NR dramatically amplifies cellular NAD⁺, the fuel that powers our mitochondria.”— Dr. Jason Schuster
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