Dr. Hansen has 30+ years of clinical experience. We use Ashwagandha Roots Only! Leaf components are never added. There are some Ashwagandha manufacturers who make their extract using the plant’s leaves instead of just the roots. However, Dr. Hansen knows the scientific research and bases his formulations on published clinical trials and sources the highest quality, standardized extracts, proven in the clinical research to be safe and effective.
An 8-week double-blind, placebo controlled clinical trial of a standardized, full-spectrum, root only extract of KSM-66 branded Ashwagandha was shown to significantly reduce stress, anxiety and serum cortisol levels in adults.