Compound Profile

Withaferin A

Reactive withanolide from ashwagandha with strong inflammatory and stress pathway effects.

Use extra caution Limited human safety data available | Mostly preclinical as isolated compound; whole ashwagandha safety does not equal isolated withaferin A safety. Details

Last reviewed: Report a correctionProfile-wide ·C Limited
Withaferin A monograph visual
Generated profile category visual

At a glance

From this profile's structured data
Evidence
Grade C
Safety
Limited human safety data available | Mostly preclinical as isolated compound; whole ashwagandha safety does not equal isolated withaferin A safety.
Profile context
HSP90, NF-κB, Nrf2
Next steps

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Quick stats

Evidence level
Limited evidence
Typical onset
Varies by prep
Safety rating
Use extra caution: Use caution
Best for
HSP90, NF κB, Nrf2
Avoid / review if
Pregnancy, Liver

Botanical Context

Source botanicals and comparison guides related to Withaferin A.

Safety

Safety & Cautions

Limited human safety data available | Mostly preclinical as isolated compound; whole ashwagandha safety does not equal isolated withaferin A safety. Avoid pregnancy and use caution with liver disease, immune disorders, and drug stacks.

High caution

Caution level: High. Multiple caution categories apply, or the record uses avoid/contraindication language.

  • Interaction-AwareMedication or interaction context is explicitly noted.
  • Liver-SensitiveLiver-related caution language appears in the profile.

Evidence Summary

Profile-wide ·C Limited

Evidence lens

Read as directional context, not settled clinical proof.

LimitedLimited evidence

Human clinical evidence: Not the primary signal

Mechanistic / preclinical: Mechanism mappedInflammatory Signaling Modulation · Oxidative Stress Modulation · Mitochondrial Support

Research maturity: Theoretical / mechanistic researchMechanistic or unresolved evidence is kept separate from established human outcomes.

Safety boundary: Safety note availableLimited human safety data available | Mostly preclinical as isolated compound; whole ashwagandha safety does not equal isolated withaferin A safety.

Evidence Strength

Confidence estimate based on the design quality and consistency of published clinical trials.

Limited evidence

Withaferin A has a limited evidence rating.

AdaptogenStress & MoodLongevity
Effects
6
How evidence grades work

Each grade reflects the strength and consistency of published human evidence — not marketing claims. Grades are based on study count, design quality, effect size, consistency, and recency.

Strong
Multiple RCTs, consistent direction, adequate effect size
Moderate
Some RCTs or consistent observational data in humans
Preliminary / Mixed
Animal or in-vitro only, or conflicting human data
Traditional / Theoretical
Traditional use only; no controlled human trials

How Withaferin A Works

Simplified mechanism pathway based on preclinical and pharmacological evidence. Does not confirm clinical efficacy.

Mechanism Pathway — How Withaferin A Works

How Withaferin A WorksWithaferin A acts on biological target pathways via anti inflammatory, leading to hsp90.Withaferin ABiological TargetBiological pathwayAnti InflammatoryHsp90Observable outcomeAntioxidantParallel pathway
CompoundTarget / ReceptorMechanismEffect / Outcome

Dosing

Common form
softgel or liquid oil
No standardized dose
Our source data records the usual product form for this ingredient but no studied dose. Preparations differ widely, so follow the standardization on the product you actually have and speak to a clinician before starting.
Mechanisms & biological pathways

Preclinical mechanism details from scientific profiles; these represent plausible pathways but do not guarantee clinical efficacy in humans.

  • Inflammatory Signaling Modulation
  • Oxidative Stress Modulation
  • Mitochondrial Support
  • Stress Response Modulation
  • NF KB Modulation
  • Nrf2 Activation

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Related research paths

Compare & Sourcing

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Safety first · Harm reduction

This information is educational and not medical advice. Start low, avoid risky combinations, and consult a licensed clinician before making health decisions—especially if you use medications, have diagnosed conditions, or are pregnant/breastfeeding.

Learn how we evaluate confidence, safety, and intensity on the methodology page.

Editorial Review

Checked against primary sources, cited evidence, and contraindication language before publication. Evidence claims, safety language, and affiliate modules are reviewed independently. Not personal medical advice.

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