Common Name: Indian Snakeroot Causes & Symptoms for SBL Rauvolfia Serpentina(Dilution) Rauwolfia Serpentina roots are used for calming the central nervous system. It is helpful for reducing anxiety. It is mainly used in complaints of High blood pressure and associated symptoms. Action of SBL Rauvolfia Serpentina(Dilution) The main active constituent in Rauwolfia Serpentina is Reserpine, which is well-known for its antipsychotic and antihypertensive action.