Red Salvia Root (Salvia miltiorrhizae, Red Sage, Dan Shen in Chinese) is a very important herb in the Chinese tonic health system because it supports healthy blood circulation. Salvia root is classically said to have a cold energy. It is the primary herb now used in Chinese herbalism to promote heart health. Extensive research has shown it to provide safe and effective cardiovascular support. Salvia root is also an excellent immune system tonic. This extract contains all the active constituents of the finest grade Salvia roots.