Ashwagandha Research

Teelixir's evidence-based guide to Withania somnifera — the most-studied adaptogen for stress, cortisol, and hormonal balance. Our research library draws on 1,584+ published studies, including 29 human RCTs, to separate what works from what doesn't.

Start here: Ashwagandha Benefits — Complete Evidence Guide · Dosage Guide · Side Effects & Safety

By health goal: Anxiety & Stress · Sleep · Depression & Mood · Testosterone · Thyroid · Muscle & Strength · Weight Loss

For women: Hormones, Perimenopause & Fertility · Hair & Skin

Compare: vs Lion's Mane · vs Rhodiola · vs Maca · vs Ginseng · vs Reishi · vs Cordyceps

Stacks: + Magnesium

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Ashwagandha

Apr 09, 2026

Does Ashwagandha Boost Testosterone? Evidence Review

Studies suggest ashwagandha may support testosterone in stressed men. KSM-66 leads the research. RCTs, meta-analyses and honest assessment.

Ashwagandha for anxiety — what 465 studies reveal about stress relief

Apr 09, 2026

Ashwagandha for Anxiety and Stress: What 9 RCTs Actually Found

Ashwagandha has accumulated 465 published studies on stress and anxiety, including 22 systematic reviews. We examine what the evidence actually shows — including the 2025 cortisol paradox that most supplement companies won't tell you about.

Ashwagandha dosage guide — measuring the right amount of root powder extract

Apr 09, 2026

Ashwagandha Dosage: 300mg, 600mg or KSM-66 — What’s Right?

Evidence-based ashwagandha dosage guide: 300–600 mg/day for standardised extracts, KSM-66 dosing, timing tips, and how our 10:1 root extract compares.

Apr 09, 2026

Ashwagandha vs Lion's Mane: The Body-Brain Divide

Ashwagandha protects the body from stress while lion's mane protects the brain. Compare evidence, mechanisms, and discover when to use each.

Ashwagandha for sleep — natural adaptogen for better rest and relaxation

Mar 27, 2026

Ashwagandha for Sleep: The Stress-Sleep Loop Explained by 5 RCTs

Peter Orpen reviews 1,584 ashwagandha studies to explain how this adaptogen may support sleep by targeting stress � not sedation. Includes dosage, evidence, and a decision guide.

Ashwagandha for thyroid — Hashimoto’s, hypothyroidism and the evidence

Mar 27, 2026

Ashwagandha for Thyroid: The Bidirectional Risk Explained

By Peter Orpen — Co-Owner, Teelixir Published: 24 March 2026 Updated: 24 March 2026 Evidence Snapshot SR + RCTs2023 systematic review (PMID: 37013429) TSH, T3, T4All improved in subclinical hypothyroidism RCTs CautionHyperthyroidism: monitor or avoid The Thyroid Axis Effect: Ashwagandha’s...

Ashwagandha for muscle strength and athletic performance

Mar 27, 2026

Ashwagandha for Muscle Strength: The Anabolic Recovery Window Explained

Evidence-based guide to ashwagandha for athletic performance. Covers muscle strength, VO2max, recovery, dosing protocols, and honest comparison with creatine. Based on 109 studies including 7 systematic reviews.