KSM–66 has by far the highest amount of active ingredients of any ashwagandha root extract, It is a full-spectrum root-only extract.
It is standardized to a full 5% withanolides — the main class of active ingredients. And the most effective withanolides are concentrated in the root. Full spectrum means that the ratios of the various withanolides are the same as they are in nature Take 1 capsule 2 times daily.