Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Ashwagandha (KSM-66) | Cistanche (Cistanche tubulosa) | |
|---|---|---|
| Category | Adaptogens | Adaptogens |
| Standard Dose | 600mg KSM-66 daily (300mg 2x/day) | — |
| Timing | Morning and evening with meals. Evening dose supports sleep quality via cortisol reduction. | — |
| Cycle Duration | Cycle 8-12 weeks on, 2-4 weeks off (to prevent adaptogenic tolerance) | — |
| Evidence Level | strong_human | Moderate (preclinical strong, human emerging) |
Ashwagandha's primary bioactives are withanolides (particularly withaferin A and withanolide D). KSM-66 is a full-spectrum root extract standardized to >5% withanolides. It modulates the HPA axis by reducing cortisol output (20-30% reduction in trials), likely through GABAergic activity (withanolides are GABA-mimetic at GABA-A receptors) and by normalizing cortisol receptor (GR) sensitivity. It also inhibits the NMDA-induced neurotoxicity pathway, enhances DHEA-S production, promotes thyroid function (increases T4 to T3 conversion), upregulates antioxidant enzymes (SOD, catalase, glutathione peroxidase), and has demonstrated sirtuin-activating properties.
600mg KSM-66 daily (300mg 2x/day)
Morning and evening with meals. Evening dose supports sleep quality via cortisol reduction.
Cycle 8-12 weeks on, 2-4 weeks off (to prevent adaptogenic tolerance)
Desert plant extract containing echinacoside and acteoside that support testosterone via LH stimulation, enhance neurogenesis via BDNF upregulation, and improve gut microbiome composition. Traditional use as 'desert ginseng' for vitality and cognition.
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