Does Ashwagandha help energy / fatigue? (Grade B evidence)
Explore current source-reported research for this exact question. These records are separate from the synthesis below; they do not update its grade or establish a recommendation.
Ashwagandha shows a Grade B benefit for energy / fatigue — moderate-certainty evidence in the recorded sources, especially in healthy men and women. Typical studied doses are not specified.
Exact question reviewed
- Population
- healthy men and women
- Intervention
- Ashwagandha
- Comparator
- not reported
- Outcome
- energy / fatigue
- Time horizon
- not reported
Bottom line. Ashwagandha shows a Grade B benefit for energy / fatigue — moderate-certainty evidence in the recorded sources, especially in healthy men and women. Typical studied doses are not specified. [1 SR/meta]
- Direction
- benefit
- Magnitude
- Ashwagandha supplementation was more efficacious than placebo for improving fatigue/recovery variables in healthy individuals.
- Grade
- B
- Certainty
- moderate
- Clinical meaning
- small but potentially useful
- Who it applies to
- healthy men and women
- Dose / form studied
- not reported
- Safety
- moderate_with_ssri
- The one limitation
- Claim-specific limitation details are not available in this public record.
Reviewed not reported · Evidence last changed · Open evidence record (version 0)
⚠ Safety in context
- moderatewith SSRI: Ashwagandha with an SSRI may carry additive sedative/serotonergic risk; evidence is limited. full interaction →
Grade B / moderate: probably helps, and new studies are unlikely to reverse this — but could shrink the effect size.
Who it works for
Best-studied in healthy men and women.
Evidence
| Study | Design | Role | Cite |
|---|---|---|---|
| Effects of Ashwagandha (Withania somnifera) on Physical Performance: Systematic Review and Bayesian Meta-Analysis. | peer-reviewed | not classified | PMID:33670194 |
Why this grade
Reasoning trace
The current record stores Grade B at moderate certainty and links 1 publishable source. A claim-specific domain-by-domain grading rationale is not available in this public record, so no reason for upgrading or downgrading is inferred here.
Audit and version
- Claim ID
- ec_pmid:33670194#1
- Claim version
- not reported
- Governance
- legacy, not verified
- Clinician review
- Not yet reviewed by a licensed clinician
- Last evidence search
- not reported
- Last editorial review
- not verified
How it stacks up for energy / fatigue
- Ashwagandha vs Caffeine for energy / fatigue — Caffeine Grade B
- Ashwagandha vs Rhodiola for energy / fatigue — Rhodiola Grade C
- Ashwagandha vs CoQ10 for energy / fatigue — CoQ10 Grade C
- Ashwagandha vs Creatine for energy / fatigue — Creatine Grade C
- Ashwagandha vs Iron for energy / fatigue — Iron Grade A
- Ashwagandha vs Vitamin B12 for energy / fatigue — Vitamin B12 Grade C
- All interventions graded for energy / fatigue →
Grade history
No grade changes yet. Initial grade assigned; re-reviewed on every 12 months (Grade A/B). Methodology v1.
Re-review cadence: every 12 months (Grade A/B) · methodology v1.
Frequently asked
How long does Ashwagandha take to work for energy / fatigue?
This record does not report a studied onset time for Ashwagandha and energy / fatigue. Do not assume a typical timeframe.
What dose was used in studies of Ashwagandha for energy / fatigue?
No studied dose is recorded for Ashwagandha and energy / fatigue in this public record. See the dose block for what, if anything, is reported.
Does Ashwagandha work for energy / fatigue if I'm not deficient?
The recorded studied population is healthy men and women. This field alone does not show whether deficiency or baseline status changes the effect.
Ashwagandha or the next-best alternative for energy / fatigue?
See the compare block above for the head-to-head with the most-cited alternative. Grade + certainty differences matter more than any single trial.
Related
- Ashwagandha for sleep — Grade C
- Ashwagandha for stress — Grade C
- Ashwagandha for strength — Grade B
- Ashwagandha for cognition — Grade C
- Ashwagandha for testosterone / hormone levels — Grade D
- Ashwagandha for strength — Grade C
- Full profile: Ashwagandha
- Is Ashwagandha hype?
- Everything graded for energy / fatigue
- Ashwagandha with SSRI
What this is — and is not
- Evidence description
- Ashwagandha supplementation was more efficacious than placebo for improving fatigue/recovery variables in healthy individuals.
- Substrate's interpretation
- The current reviewed record assigns Grade B at moderate certainty. A domain-by-domain rationale is shown only when recorded.
- Discuss with a clinician
- If you're on medication or have a condition that changes the calculus, bring the interaction & population blocks above to your pharmacist or prescriber before deciding.
- Individualized medical advice
- Not provided here or on any Substrate surface (API, agent tool, embed) — see YMYL policy.
Cite this page
Citation is encouraged. The proposed reuse license is CC-BY-4.0; status: pending-governance-ratification.
Plain-text citation
Substrate. Does Ashwagandha help energy / fatigue? (Grade B). https://evidencebased.info/interventions/ashwagandha/energy. Updated 2026-06-05.
BibTeX
@misc{substrate_onsashwagandhaenergy,
author = {Substrate editorial},
title = {Does Ashwagandha help energy / fatigue?},
year = {2026},
url = {https://evidencebased.info/interventions/ashwagandha/energy},
note = {Grade B, evidencebased.info}
}Found something wrong on this page? Report an error →
Current source-reported research
Membership uses admitted intervention and measured-outcome associations for this exact question. Different populations, preparations, comparators and timepoints remain separate. No pooling or update to the synthesis is asserted.