Root-Only vs. Leaf Extracts
Traditional Ayurvedic history and modern clinical trials focus predominantly on Withania somnifera root extracts. While leaf extracts offer higher raw withanolide counts at lower raw material costs, they frequently contain elevated concentrations of Withaferin A—a cytotoxic withanolide restricted or strictly capped in multiple European Union member states. Nutrikal prioritizes full-spectrum root extracts to ensure legal safety, maximum efficacy, and clean regulatory dossiers.