Source comparison
Best NAD+ Dosage Mitochondrial Health 2026: Comparison by Form and Delivery
Sublingual NMN 250–500mg daily (split dose) 60–75% 15–20 minutes 30–40% at 500mg Highest bioavailability; best supported by mitochondrial function trials Oral NMN (capsule) 400–600mg daily 12–18% 45–90 minutes 15–22% at 500mg Requires higher doses; degrades in
This comparison does not assign a generated winner or score.
- Sublingual NMN
- 250–500mg daily (split dose)
- 60–75%
- 15–20 minutes
- 30–40% at 500mg
- Highest bioavailability; best supported by mitochondrial function trials
- Oral NMN (capsule)
- 400–600mg daily
- 12–18%
- 45–90 minutes
- 15–22% at 500mg
- Requires higher doses; degrades in gut before systemic absorption
- Liposomal NMN
- 300–500mg daily
- 25–40%
- 30–45 minutes
- 20–28% at 500mg
- Better than capsules; protects against first-pass degradation
- Sublingual NR
- 300–400mg daily
- 50–65%
- 20–30 minutes
- 25–35% at 400mg
- Slightly lower conversion efficiency than NMN; still effective
- Oral NAD+
- Not effective at any dose
- <5%
- Minimal detection
- <5% (statistically insignificant)
- Molecule too large; degraded before cellular uptake
- IV NAD+
- 250–500mg per infusion
- 100% (direct)
- Immediate
- Variable; safety concerns at high doses
- Bypasses absorption but risks sirtuin inhibition from nicotinamide spike