Currently, 4 types of antivenom are available for snakebite treatment including freeze-dried hemorrhagic antivenom for T. stejnegeri and P. mucrosquamatus (FH-AV), neurotoxic antivenom for B. multicinctus and N. atra, D. acutus antivenom (DA-AV) and D. russelii formosensis antivenom (Liau and Huang, 1997).