Source comparison
Best NAD+ Dosage Metabolism 2026: Protocol Comparison
Standard Oral NR 300mg once daily Gelatin capsule 3-5% (~15mg absorbed) Minimal NAD+ elevation; insufficient for measurable metabolic impact in most adults Ineffective for metabolic optimisation. Bioavailability too low Sublingual NMN 250mg twice daily Subling
This comparison does not assign a generated winner or score.
- Standard Oral NR
- 300mg once daily
- Gelatin capsule
- 3-5% (~15mg absorbed)
- Minimal NAD+ elevation; insufficient for measurable metabolic impact in most adults
- Ineffective for metabolic optimisation. Bioavailability too low
- Sublingual NMN
- 250mg twice daily
- Sublingual tablet
- 15-25% (~75-125mg absorbed)
- Sustained NAD+ elevation; improved mitochondrial respiration and ATP production
- Gold standard for metabolic support in adults 40+
- Liposomal NR
- 500mg once daily
- Liposomal suspension
- 20-30% (~100-150mg absorbed)
- Comparable to sublingual NMN; single-dose convenience
- Effective alternative for compliance; slightly lower peak levels
- High-Dose Oral NMN
- 1000mg twice daily
- Standard capsule
- 3-5% (~60-100mg absorbed)
- Moderate elevation; expensive and inefficient relative to sublingual forms
- Wasteful. 90%+ of compound excreted; sublingual achieves same outcome at 1/4 cost
- NAD+ IV Infusion
- 250-500mg per session
- Intravenous
- 100%
- Rapid peak elevation; metabolic effects last 48-72 hours
- Therapeutic contexts only; not sustainable for daily metabolic maintenance