Dehydroandrographolide (DP) from Andrographis paniculata (Burm. F.) Nees is a potential anticancer agent which can act, in part, through the inhibition of TMEM16A expression and may support TMEM16A as a novel target for antitumor therapy in TMEM16A-amplified cancers. It was shown that DP inhibits the invasion of human oral cancer cells and is a potential chemopreventive agent against oral cancer metastasis. It is also used for the treatment of infections in China. However, DP has not been found to significantly inhibit bacterial and viral growth directly. It was discovered that the DP enhanced innate immunity of intestinal tract through increased expression of human β -defensin-2 (hBD-2) through the p38 MAPK pathways. Dehydroandrographolide also possesses activity against hepatitis B virus