An antibiotic is given for the treatment of a contamination brought about by microorganisms or Bacteria. It is not successful against infections by viruses. On the off chance that you have a disease, it is imperative to know whether it is brought about by microorganisms or an infection. Most upper respiratory tract contaminations, for example, the basic icy and sore throats are brought on by infections - anti-infection agents don't conflict with these viruses. When the mindful pathogenic microorganism is now known or has been distinguished, complete treatment can be begun. This will for the most part include the utilization of a tight range antibiotic. To keep away from surgery anti-microbial might be given for non-confused intense an infected appendix. Viable treatment has been evidenced. Antibiotics might be given as a preventive measure (prophylactic) and this is generally constrained to at-hazard populaces, for example, those with a debilitated insusceptible framework (especially in HIV cases to avoid pneumonia), those taking immunosuppressive medications, growth patients and those having surgery. Their utilization in surgical systems is to help anticipate contamination of entry points made. They have an imperative part in dental anti-microbial prophylaxis where their utilization may counteract bacteraemia and ensuing infective endocarditis. Anti-infection agents are additionally used to avert contamination in instances of neutropenia especially tumour related.