First, we believe it is important to introduce to you, dear reader, some essential pieces of information about antibiotics that includes their definition, utilisation, significance and also some of the side effects that are expected to be seen. Antibiotics are known to be among the category of drugs that are oriented against microorganisms, mainly bacteria. These drugs are administered to patient when they are struggling with a bacterial infection of any sort or severity. Antibiotics are also known as antibacterial drugs. Antibiotics are always administered to patient as per special prescription issued by the doctor who is supervising the patient's case, taking responsibility and moderating it. Dosages are also specified by the doctor, and they differ in accordance with the type of prescribed antibiotic, the presented disease, the severity of the disease and the healthy status of the patient which can sometimes contraindicate the prescription of the drug.