Understand the source comparison
Comparison Table: NAD⁺, NMN, NR
Compound Structure/Source Bioavailability Conversion to NAD⁺ Research Use Typical Dosing Safety Profile Supplement Status NAD⁺ Core coenzyme, not orally stable Poor orally N/A (already NAD⁺) IV/injection in trials 250–1,000 mg IV Good in short trials IV clinic
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Compound
- Structure/Source
- Bioavailability
- Conversion to NAD⁺
- Research Use
- Typical Dosing
- Safety Profile
- Supplement Status
- NAD⁺
- Core coenzyme, not orally stable
- Poor orally
- N/A (already NAD⁺)
- IV/injection in trials
- 250–1,000 mg IV
- Good in short trials
- IV clinics, research
- NMN
- B3 derivative, found in broccoli, avocados
- Good orally
- Directly to NAD⁺ (via NR)
- Anti-aging, metabolic
- 100–1,250 mg/day
- Safe up to 1,250 mg/day
- Widely available
- NR
- B3 derivative, in milk, yeast, beer
- Direct to NAD⁺
- 100–2,000 mg/day
- Safe up to 2,000 mg/day