Comparison
Melatonin vs Nicotinamide Riboside (NR)
Melatonin
Pineal hormone regulating circadian rhythm. Low doses (0.3-1mg) often outperform higher doses for sleep.
Nicotinamide Riboside (NR)
NAD+ precursor — the most-studied form for direct NAD+ elevation in humans. Branded as Niagen.
| Field | Melatonin | Nicotinamide Riboside (NR) |
|---|---|---|
| Category | neuroprotective | neuroprotective |
| Dose range | 0.3–3mg | 250–1000mg |
| Half-life | 1h | — |
| Onset | 30min | — |
| Evidence | EVIDENCEA | EVIDENCEA |
| Safety | ●●●●● | ●●●●● |
| Legal (US) | USOTC | USOTC |
| PubMed refs | 28000 | 250 |
The comparison in plain English
Auto-generated from dataMelatonin and Nicotinamide Riboside (NR) are both in the neuroprotective category respectively. Melatonin Pineal hormone regulating circadian rhythm. Nicotinamide Riboside (NR) NAD+ precursor — the most-studied form for direct NAD+ elevation in humans.
Bottom line
Melatonin (evidence A, safety 5/5) matches the evidence base of Nicotinamide Riboside (NR) (evidence A, safety 5/5). Melatonin has the slightly cleaner safety profile. For users new to either, the higher-evidence option is the safer first try.
Choose Melatonin if
Melatonin is the better fit when your goal aligns with its mechanism (Endogenous hormone produced by the pineal gland in response to darkness, signalling the circadian sleep window) and the dose range (0.3–3mg) suits your protocol. Half-life is 1h.
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.