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Best Ashwagandha for Stress & Mood

Top 10 products ranked

Last reviewed May 2026

Clinical dose: 300–600 mg

Why Ashwagandha for Stress & Mood

Ashwagandha plays a key role in stress & mood. Ashwagandha is an adaptogenic herb used in Ayurvedic medicine. Multiple RCTs show reductions in perceived stress and cortisol levels.

What dose to look for

Clinical studies typically use 300–600 mg of ashwagandha. KSM-66 or Sensoril extract range; root extract standardized to withanolides. Products below this range may not deliver meaningful results.

What the research says

Ashwagandha has moderate clinical evidence for stress & mood benefits. Multiple clinical trials show reductions in stress and cortisol; growing evidence for sleep quality Learn more

Clinical research on Ashwagandha (Withania somnifera)

VERY HIGH — Multiple meta-analyses, 15+ RCTs, 1,000+ participants · 300–600 mg/day standardized extract (≥5% withanolides)

•2022 meta-analysis of 12 RCTs (1,002 participants) found ashwagandha significantly reduced anxiety (SMD: -1.55, p=0.005) and stress (SMD: -1.75, p=0.005).
•2024 meta-analysis of 9 RCTs (558 participants) reduced PSS (MD=-4.72), HAM-A (MD=-2.19), and serum cortisol (MD=-2.58), all p<0.05.
•2025 meta-analysis of 15 RCTs (873 participants) confirmed significant reductions in cortisol, PSS, and HAM-A scales.
•2025 BJPsych Open systematic review confirmed benefits for anxiety, depression, sleep, and stress. Optimal forms: KSM-66 or Sensoril (most studied).
•Mechanism: reduces cortisol via HPA axis modulation with additional GABAergic activity and anti-inflammatory effects. Full benefits at 6–8 weeks; some effects at 2–4 weeks.

See full Stress & Mood research →