Metronidazole treats infections happening because of infectious organism (especially for amoebiosis). Metrozyl is an anti amoebic medicine. This synthetic antimicrobial (molecular formula C6H9N3O3) drug is also used to treat vaginal trichomoniasis, skin, bone, joint infections, respiratory infection etc. But it can cause harm to human body. If general people are aware of these side effects then can ask some more detail from their doctors. It also vastly used among dogs, cat’s horses, birds & even reptiles.