Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Shilajit | Tongkat Ali (Eurycoma longifolia) | |
|---|---|---|
| Category | Adaptogens | Adaptogens |
| Standard Dose | 250-500mg purified shilajit daily (standardized to >50% fulvic acid) | 200-400mg daily (standardized to 2% eurycomanone or 22-40% bioactive content) |
| Timing | Morning with warm water or milk (traditional Ayurvedic method). Can be split AM/PM. | Morning with or without food. Can split AM/PM. |
| Cycle Duration | Cycle 8-12 weeks on, 2-4 weeks off | Cycle 8 weeks on, 2 weeks off (or 5 days on, 2 off) |
| Evidence Level | moderate_human | moderate_human |
Shilajit is a mineral-rich exudate containing fulvic acid (60-80%), dibenzo-alpha-pyrones (DBPs), and over 85 minerals in ionic form. Fulvic acid acts as an electron shuttle in mitochondrial electron transport, enhancing CoQ10 function and ATP production. DBPs protect CoQ10 from oxidation, extending its functional half-life. Shilajit increases total and free testosterone by stimulating steroidogenesis and reducing SHBG. It also enhances mitochondrial membrane potential, acts as a potent antioxidant (fulvic acid neutralizes free radicals), and improves mineral absorption by forming bioavailable fulvic acid-mineral complexes.
250-500mg purified shilajit daily (standardized to >50% fulvic acid)
Morning with warm water or milk (traditional Ayurvedic method). Can be split AM/PM.
Cycle 8-12 weeks on, 2-4 weeks off
Tongkat Ali contains quassinoids (eurycomanone, eurycomanol) and bioactive peptides (eurypeptides). Primary mechanisms: reduces SHBG binding, freeing testosterone; inhibits aromatase (CYP19A1), reducing estrogen conversion; modulates the HPA axis reducing cortisol; stimulates Leydig cell steroidogenesis via cAMP pathway activation; and may inhibit phosphodiesterase (PDE) enzymes. The net effect is increased free testosterone, improved testosterone:cortisol ratio, and enhanced libido via dopaminergic and NO-mediated pathways in erectile tissue.
200-400mg daily (standardized to 2% eurycomanone or 22-40% bioactive content)
Morning with or without food. Can split AM/PM.
Cycle 8 weeks on, 2 weeks off (or 5 days on, 2 off)
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