50
SCORE
NRH (dihydronicotinamide riboside)
NAD+ precursor · Longevity · Energy
Tier 3 — Trending
What it is
A reduced form of nicotinamide riboside that, in preclinical work, raises tissue NAD+ more efficiently than NR or NMN. Human safety and pharmacokinetic data are emerging but efficacy RCTs on hard endpoints have not yet been published. Currently sold by a small number of premium longevity brands; significantly more expensive per gram than standard NR.
Efficacy
2/5
Safety
4/5
Research
2/5
Onset
2/5
Cost
1/5
Drug-int.
4/5
Dose
25–100 mg/day; safety data in humans is limited
Time of day & tips
Take in the morning with food; long-term human safety data are limited; consider standard NR or NMN as more cost-effective until NRH efficacy RCTs land.
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