Natural extracted. This is a cure when your bettas get cut or have any wound.The medicine is used to prevent infection in your bettas. It helps the fish fight off bacteria, kill germs and heal faster.Other than that, with its benefit in fighting off bacteria, the medicine can prevent your fish from Dropsy or Bloat. Instruction; For treatment purpose use 1 cap per 30 inch tank, For prevention purpose use 1/4 cap per 30 inch tank.