Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| DHEA (Dehydroepiandrosterone) | Milk Thistle (Silymarin) | |
|---|---|---|
| Category | Supplements | Supplements |
| Standard Dose | 25-50mg daily (men); 10-25mg daily (women) | 200-400mg silymarin daily (standardized to 70-80% silymarin) |
| Timing | Morning (mimics natural circadian peak). With food. | With meals. Split doses for higher amounts. Phytosome form can be taken without food. |
| Cycle Duration | Ongoing under supervision with regular blood monitoring (DHEA-S, testosterone, estradiol, PSA in men) | Cycle 8-12 weeks for liver support; ongoing at low dose for maintenance |
| Evidence Level | moderate_human | strong_human |
DHEA is the most abundant circulating steroid hormone, produced primarily by the adrenal zona reticularis. It serves as a precursor for both androgens (testosterone, DHT via 3beta-HSD and 17beta-HSD) and estrogens (estradiol, estrone via aromatase). DHEA-S (sulfated form) acts as a neurosteroid, positively modulating NMDA receptors and antagonizing GABA-A receptors (cognitive enhancement/alertness). It also modulates immune function (enhances Th1 immunity, IL-2 production), supports bone mineral density via estrogenic metabolites, enhances insulin sensitivity via PPAR-alpha activation, and opposes cortisol's catabolic effects (DHEA:cortisol ratio is a stress/aging biomarker).
25-50mg daily (men); 10-25mg daily (women)
Morning (mimics natural circadian peak). With food.
Ongoing under supervision with regular blood monitoring (DHEA-S, testosterone, estradiol, PSA in men)
Silymarin is a complex of flavonolignans (silybin A, silybin B, silychristin, silydianin, isosilybin) with silybin being the most active. Hepatoprotective mechanisms: stabilizes hepatocyte cell membranes by altering outer lipid layer composition (preventing toxin penetration), stimulates ribosomal RNA polymerase I (accelerating hepatocyte protein synthesis and regeneration), inhibits NF-kB and TNF-alpha (anti-inflammatory), scavenges free radicals (both ROS and RNS), promotes glutathione synthesis (increases intracellular GSH by 35%), and inhibits hepatic stellate cell activation (anti-fibrotic). Silybin also activates AMPK and enhances bile flow.
200-400mg silymarin daily (standardized to 70-80% silymarin)
With meals. Split doses for higher amounts. Phytosome form can be taken without food.
Cycle 8-12 weeks for liver support; ongoing at low dose for maintenance
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