The combination of herbs in Rhodiola & Ginseng Complex contains many compounds including phenylpropanoids such as rosarin, rosavin and rosin (rosavins), salidroside (a hydroxyphenethyl glucoside), and a complex mixture of steroidal saponins (called ginsenosides). This product is standardized to contain 4.5 mg of rosavins, 1.5 mg of salidroside and 8.4 mg of ginsenosides (calculated as Rb2 to Rb1 is NLT 0.4 by HPLC) per tablet to ensure optimal strength and quality.