At present, the disease caused by the bacterial infection can be treated with antibiotics because the bacteria make the body inflammation. The antibiotic treatment eradicates the bacteria by reduce inflammation But some types of inflammation can not be treated with antibiotics. But we had a misunderstanding that Antibiotics are drugs that kill bacteria goodies. Thus, the excessive use of antibiotics, such as the flu, is a disease caused by a virus and heal itself naturally so there's no need to take antibiotics
so using antibiotics must be under a doctor's advice because if we use the dose too much. It will cause adverse effects such as taking antibiotics frequently and inappropriate can cause bacteria or other microbes to change so antibiotics don’t work against them. This is called bacterial resistance .Treating these resistant bacteria requires higher doses of medicine or stronger antibiotics. Because of antibiotic overuse, certain bacteria have become resistant to even the most powerful antibiotics available today.