O2 New Mango Flavour Suspension is a combination of antibacterial (ofloxacin) and anti-amoebic (metronidazole) used to treat various infections caused by bacteria and dysentery caused due to amoeba. A bacterial infection is a condition in which harmful bacteria enter, multiply, and infect our bodies. It can target any body part and multiple very quickly. Amoebic dysentery can be caused due to Entamoeba histolytica, Giardia lamblia, or Clostridium difficile.