Radix is able to resist the virus and improve the human immune system. Studies have shown that Radix isatidis extracts can inhibit the killing of Avian Influenza A virus and Avian Influenza A virus by restricting virus division. The aqueous solution of the extract has an inhibitory effect on common cold viruses. It has an inhibitory and killing effect against epidemic meningitis virus.
Radix is also useful for cardiovascular protection. It can promote blood circulation, clear blood vessels and lower blood pressure. In addition, swelling, detoxification, and anti-allergy are also one of its important functions.