Herbs & botanicals
KSM-66
Names you may see: ashwagandha withania somnifera KSM66
The quick take
KSM-66 is a branded ashwagandha root extract. It belongs within the ashwagandha family rather than representing a different plant.
A closer look
What forms will I see on a label?
Look for KSM-66 explicitly on the product label. Generic ashwagandha is not automatically the same branded extract.
Why people use it
The KSM-66 manufacturer promotes this ashwagandha extract for stress management, recovery, strength and endurance. Shoppers may choose it when they want a specifically identified extract.
These are common goals and marketing uses. The evidence section below explains what research supports.
What does the evidence tell us?
Ashwagandha research is preparation-specific. Consider the extract, participants and outcomes studied instead of applying every finding to every product.
What should I know before using it?
Ashwagandha cautions still apply: avoid in pregnancy and discuss thyroid conditions, autoimmune conditions, liver concerns and interacting medicines with a professional.
Sources & further reading
NIH National Center for Complementary and Integrative Health ↗
Content reviewed: September 30, 2026
General educational information. Follow the product label and seek individual advice when needed.