Studies indicate various forms of Ashwagandha have different efficacy levels:
- Root extract: Most researched, typically standardized to 2.5-5% withanolides
- KSM-66®: Patented full-spectrum extract with high concentration
- Powder: Traditional form, but may require larger doses
- Liquid extracts: Fast absorption but varied potency
Look for root extracts standardized to contain at least 2.5% withanolides and avoid leaf extracts due to inconsistent active compounds. Quality matters – choose products with third-party testing and good manufacturing practices (GMP) certification. The most effective forms typically combine root extract with black pepper for enhanced bioavailability.
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Last Updated: September 25, 2025
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