02/14/2026
Randomized Placebo-Controlled Trial Shows Ashwagandha Improved ADHD Symptoms, Executive Function, Sleep, and Anxiety
A randomized, double-blind, placebo-controlled clinical trial evaluated standardized ashwagandha root extract (KSM-66®) in children ages 5–12 with ADHD over 8 weeks.
What were the results?
Primary Outcome: ADHD symptoms
-ADHD Rating Scale-IV scores improved by 36.7% in the ashwagandha group, while the placebo group showed essentially no improvement
Secondary Outcomes: Executive Function (BRIEF-2)
Executive function is the brain’s ability to regulate attention, behavior, emotions, and working memory.
Ashwagandha produced major improvements across all executive function domains:
-Behavioral Regulation Index: 47.9% improvement
-Emotional Regulation Index: 38.7% improvement
-Cognitive Regulation Index: 38.3% improvement
-Global Executive Composite: 44.2% improvement
These improvements reflect better impulse control, emotional stability, working memory, and self-regulation.
Secondary Outcomes: Sleep, Anxiety, and Quality of Life (PROMIS)
Ashwagandha also significantly improved broader neurological and emotional health:
-Sleep disturbance: 39.6% improvement
-Anxiety: 40.7% improvement
-Overall quality of life: 40.2% improvement
Clinical improvement ratings (CGI-C):
-31.0% were rated very much improved
-48.5% were rated much improved
-20.7% were rated minimally improved
-100% of children showed some degree of clinical improvement
Importantly, this was a randomized, double-blind, placebo-controlled trial, the gold standard in clinical research, meaning neither families nor investigators knew who received ashwagandha.
This study provides strong evidence that ashwagandha significantly improved ADHD symptoms, executive function, emotional regulation, sleep, anxiety, and overall functioning in children. (study in comments below)
Yours in health,
Dr. Chris Caffery
URL: www.drcafferyintegrativehealth.com
Facebook: https://www.facebook.com/DrCaffery
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