Which type of medicine kills disease. causing bacteria to prevent infections but also kills the good bacterthat your body needs ?

For many viral infections there are no effective antiviral medicines (unlike antibiotics for bacteria). Fortunately, the immune system in the body usually fights off most viral infections within a few days. Taking 'symptomatic' treatments for a high temperature (fever) or catarrh, such as paracetamol and/or ibuprofen, resting and drinking plenty are usually all that needs to be done to get better.