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Information on clinical trials regarding NAD+ precursors: NR, NMN, niacin (nicotinic acid and niacinamide/nicotinamide) and tryptophan.
| NAD+ Precursor | Number of Studies | ||||||
|---|---|---|---|---|---|---|---|
| Not Recruiting | Recruiting | Active | Terminated | Completed | Suspended | Unknown Status | |
| NR | 3 | 10 | 4 | 1 | 24 | 2 | 8 |
| NMN | 0 | 5 | 2 | 0 | 7 | 0 | 0 |
| Niacin | 22 | 110 | 24 | 39 | 357 | 5 | 47 |
| Tryptophan | 16 | 57 | 14 | 21 | 131 | 0 | 38 |
