Schizandrins have been found to act as tonics for the liver, ... substances called schizandrin as well as vitamins C and E. Schizandrins have been found to act as tonics for the liver ... Specifications Schizandrin >1.5% HPLC Schizandrin B >1.2% HPLC Schizandrins 2-9% HPLC Pharmacological functionThe lignans isolated from the drug ...