Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| DIM (Diindolylmethane) | NR (Nicotinamide Riboside) | |
|---|---|---|
| Category | Supplements | Supplements |
| Standard Dose | 100-200mg DIM daily | 300-600mg daily |
| Timing | With meals (fat enhances absorption). Consistent daily dosing for estrogen metabolism modulation. | Morning with or without food. |
| Cycle Duration | ongoing or cycle 8-12 weeks on, 4 weeks off | ongoing |
| Evidence Level | moderate_human | Moderate-Strong |
DIM is formed from indole-3-carbinol (I3C, from cruciferous vegetables) via acid condensation in the stomach. It modulates estrogen metabolism by promoting the 2-hydroxylation pathway (producing 2-hydroxyestrone, considered 'protective' estrogen) over the 16alpha-hydroxylation pathway (producing 16alpha-hydroxyestrone, considered proliferative) and the 4-hydroxylation pathway (producing 4-hydroxyestrone, genotoxic). DIM binds the aryl hydrocarbon receptor (AhR), inducing Phase I (CYP1A1, CYP1A2) and Phase II enzymes that facilitate estrogen detoxification. It also inhibits aromatase and has anti-androgen receptor effects (competitive binding).
100-200mg DIM daily
With meals (fat enhances absorption). Consistent daily dosing for estrogen metabolism modulation.
ongoing or cycle 8-12 weeks on, 4 weeks off
NR is converted to NMN by nicotinamide riboside kinases (NRK1/NRK2), then to NAD+ via the salvage pathway. Like NMN, elevated NAD+ activates sirtuins, PARPs, and CD38. NR has demonstrated ability to cross the blood-brain barrier and elevate brain NAD+ levels. It supports mitochondrial function, DNA repair, and circadian rhythm regulation through SIRT1-mediated deacetylation of BMAL1 and CLOCK proteins.
300-600mg daily
Morning with or without food.
ongoing
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