Winter Cherry (Withania Somnifera): Supply Situation
In the root of the sleeping berry, approximately 1.33% of withanolides and 0.13%-0.31% of alkaloids are present. In comparison, in the leaves, the concentrations of withanolides and alkaloids are increased by 1.8 times and 2.6 times, respectively.The extracts used in dietary supplements are usually standardized to 1.5% withanolides . The German Federal Institute for Risk … Winter Cherry (Withania Somnifera): Supply Situation