Is Ashwagandha (standardized extract) worth it?
May reduce perceived stress at a standardized dose over several weeks — but the evidence is extract-specific, short, and small-trial-heavy. Treat it as a modest, product-specific signal, not "ashwagandha works." Don't extrapolate to random root powder.
The call
Several small short RCTs of standardized extracts suggest lower perceived-stress scores and reduced measured cortisol in some trials. Products and doses vary, so results don't generalize cleanly across forms, and evidence quality is moderate-at-best (small N, some industry funding). Confidence is downgraded accordingly.
Safety
Can raise thyroid hormone — caution with thyroid conditions and meds. Avoid in pregnancy and breastfeeding. Caution with autoimmune conditions, sedatives, antidiabetic and antihypertensive meds, immunosuppressants, hormone-sensitive conditions. Rare liver-injury case reports — stop and see a clinician for jaundice, dark urine, itching, or abdominal pain.
Dose that matters: 300–600 mg/day standardized root extract (KSM-66/Sensoril) · 6–8 wks, then reassess
Sources
Tier 2 · evidence synthesis · Reviewed by the Stack-kit desk