Ashwagandha for Adrenal Dysfunction

Ashwagandha has reasonable trial support for reducing perceived stress — the symptom cluster marketed as adrenal dysfunction. It does not treat the adrenal glands, and it is not a substitute for evaluating the real causes of fatigue.

Overview

Verdict

Mixed evidence

Legitimate as a stress-reduction aid in otherwise healthy people; it cannot fix adrenal dysfunction because that condition, as marketed, does not exist — and genuine Addison\u0027s must be excluded first.

How It Works

Withanolides modulate the HPA axis and GABAergic signaling; trials show reduced perceived stress and modestly lower morning cortisol in stressed but otherwise healthy adults.

Dosing & Protocol

Typical dose

Recommended dose: 300–600 mg of a root extract standardized to 5% withanolides (e.g., KSM-66) once or twice daily
Expected timeframe: 4–8 weeks

Protocol

form: Root extract standardised to withanolides - KSM-66 or Sensoril; whole-leaf products are not what was trialled
timing: With food; morning if it feels activating, evening if it feels sedating
duration: 8-12 weeks, then reassess
titration: After two weeks, split to 300 mg twice daily or move to 600 mg once daily
measurement: Perceived Stress Scale at baseline and week 8; morning cortisol only if your clinician orders it
starting dose: 300 mg once daily with food

Evidence

What the studies say

Randomized trials (Chandrasekhar 2012 and subsequent replications, plus meta-analyses 2021–2022) show ashwagandha extracts reduce perceived stress scale scores and modestly lower serum cortisol versus placebo over 8 weeks in chronically stressed adults. This supports use for stress and sleep quality, but says nothing about adrenal pathology — no trial has enrolled patients with measured adrenal dysfunction, because no such validated entity exists outside true adrenal insufficiency. Practical caution: fatigue with weight loss, hyperpigmentation, or orthostatic dizziness needs an 8 AM cortisol and ACTH before any adaptogen trial, and rare liver injury has been reported with ashwagandha.

A Randomized, Double-Blind, Placebo-Controlled Study of Ashwagandha Extract in Stress and Anxiety

Score: 7/10

2012

rct

n=64

Chandrasekhar K, Kapoor J, Anishetty S

The treated group showed a significant reduction in scores on all stress-assessment scales and a 27.9% reduction in serum cortisol compared with placebo.

View source

An investigation into the stress-relieving and pharmacological actions of an ashwagandha (Withania somnifera) extract: a randomized, double-blind, placebo-controlled study

Score: 7/10

2019

rct

n=60

Lopresti AL, Smith SJ, Malvi H +1 more

Ashwagandha reduced Hamilton Anxiety and DASS-21 stress scores and lowered morning cortisol compared with placebo.

View source

Safety

Caveats

{"Not for genuine adrenal disease — get tested if red flags exist","Rare liver injury reports; stop for jaundice or dark urine","Avoid in pregnancy and with hyperthyroidism","Sedating at higher doses — combine cautiously with sedatives"}

Less likely to help if

People with true Addison's disease or secondary adrenal insufficiency, and those whose fatigue is from sleep apnoea, iron deficiency or hypothyroidism.

Medical Disclaimer

The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any supplement regimen.

Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.