KSM-66 and Sensoril are both patented, standardized ashwagandha extracts. Both work. The choice comes down to research depth vs concentration, and what you're optimizing for.
The Key Difference
KSM-66: Root-only extract, standardized to 5% withanolides. Uses a "green chemistry" extraction process without alcohol or synthetic solvents. Follows traditional Ayurvedic use of root only.
Sensoril: Root and leaf extract, standardized to 10% withanolides. More concentrated, so effective doses are lower.
Both are far superior to generic, non-standardized ashwagandha. The debate is between two good options.
Research Comparison
KSM-66 has 22+ clinical trials covering: - Stress and cortisol reduction - Testosterone and male fertility - Athletic performance - Cognitive function - Sleep quality
Sensoril has solid research for: - Stress and anxiety reduction - Cortisol lowering - Cognitive support
Both reduce cortisol significantly. KSM-66 has more research specifically on testosterone and athletic performance.
Dosing and Practicality
KSM-66: 300-600mg daily, typically split or taken once
Sensoril: 125-250mg daily, often single dose
Sensoril's higher concentration means smaller pills and lower dose. If pill burden matters to you, Sensoril wins.
Both can be taken morning (for stress) or evening (for sleep). Some people find Sensoril slightly more sedating due to higher withanolide content per mg.
Which to Choose
Choose KSM-66 if: - You want the most-researched option - Testosterone support is a goal - Athletic performance matters - You prefer root-only (traditional)
Choose Sensoril if: - You want lower pill burden - Primary goal is stress/anxiety - You prefer more concentrated extracts - Price is similar and you don't mind leaves
The Bottom Line
Both KSM-66 and Sensoril are legitimate, research-backed extracts. KSM-66 has the research edge, especially for testosterone. Sensoril is more concentrated. Either beats generic ashwagandha. Don't overthink it.