Comparison
Nicotinamide Riboside (NR) vs Pterostilbene
Nicotinamide Riboside (NR)
NAD+ precursor — the most-studied form for direct NAD+ elevation in humans. Branded as Niagen.
Pterostilbene
Methylated analog of resveratrol with much higher bioavailability. Found in blueberries.
| Field | Nicotinamide Riboside (NR) | Pterostilbene |
|---|---|---|
| Category | neuroprotective | neuroprotective |
| Dose range | 250–1000mg | 50–250mg |
| Half-life | — | — |
| Onset | — | — |
| Evidence | EVIDENCEA | EVIDENCEB |
| Safety | ●●●●● | ●●●●● |
| Legal (US) | USOTC | USOTC |
| PubMed refs | 250 | 280 |
The comparison in plain English
Auto-generated from dataNicotinamide Riboside (NR) and Pterostilbene are both in the neuroprotective category respectively. Nicotinamide Riboside (NR) NAD+ precursor — the most-studied form for direct NAD+ elevation in humans. Pterostilbene Methylated analog of resveratrol with much higher bioavailability.
Bottom line
Nicotinamide Riboside (NR) (evidence A, safety 5/5) has a weaker evidence base than Pterostilbene (evidence B, safety 5/5). Nicotinamide Riboside (NR) has the slightly cleaner safety profile. For users new to either, the higher-evidence option is the safer first try.
Choose Nicotinamide Riboside (NR) if
Nicotinamide Riboside (NR) is the better fit when your goal aligns with its mechanism (Precursor in the NAD+ salvage pathway via NRK1 and NRK2 enzymes that phosphorylate NR to NMN, which then converts to NAD+) and the dose range (250–1000mg) suits your protocol. Half-life is —h.
Choose Pterostilbene if
Pterostilbene is the better fit when your goal aligns with its mechanism (Pterostilbene is structurally similar to resveratrol but with two methyl groups attached, increasing lipophilicity and substantially improving blood-brain-barrier penetration (4x oral bioavailability and a longer half-life vs resveratrol)) and the dose range (50–250mg) suits your protocol. Half-life is —h.