Source comparison
Best NAD+ Dosage Anti-Aging 2026: Delivery Route Comparison
Oral NAD+ (standard capsules) 100–500mg <5% Not achieved N/A Ineffective. NAD+ degrades in GI tract before absorption. Use precursors instead. Oral NMN 250–500mg daily 15–35% 30–45 minutes 6–8 hours Most cost-effective option with strong clinical evidence. Req
This comparison does not assign a generated winner or score.
- Oral NAD+ (standard capsules)
- 100–500mg
- <5%
- Not achieved
- N/A
- Ineffective. NAD+ degrades in GI tract before absorption. Use precursors instead.
- Oral NMN
- 250–500mg daily
- 15–35%
- 30–45 minutes
- 6–8 hours
- Most cost-effective option with strong clinical evidence. Requires morning timing for optimal results.
- Oral NR
- 250–1,000mg daily
- 20–40%
- 45–60 minutes
- 6–10 hours
- Well-studied, slightly slower uptake than NMN. Higher doses needed for equivalent NAD+ elevation.
- Liposomal NAD+
- 50–200mg
- 15–25%
- 20–30 minutes
- 4–6 hours
- Viable alternative to precursors. More expensive per dose but faster absorption.
- IV NAD+
- 50–250mg weekly
- 95–100%
- 1–2 hours
- 24–48 hours
- Highest bioavailability. Requires clinical setting. Best for individuals with poor oral absorption.
- Sublingual NMN
- 125–250mg
- 25–45%
- 15–25 minutes
- 5–7 hours
- Faster absorption than oral capsules. Limited long-term data compared to standard oral forms.
- Our experience working with labs using NAD+ protocols across diverse populations shows oral NMN at 250–500mg daily delivers the best balance of efficacy, cost, and tolerability for most research applications. IV administration remains superior for bioavailability but requires clinical oversight and substantially higher per-dose cost.