Antibiotic injections are widely used and most effective against bacterial infections in emergency wards in hospitals. They tend to save many lives and hinders the infection growth of bacteria. Doctors first choice for any serious illness that is caused by bacteria is tackle with use of antibiotic injections as they are highly powerful for curing the diseases since 1940, when they are firstly discovered. We are most familiar with penicillins such as amoxicillin, erythromycin, tetracycline, ciproflaxin, and azithromycin which are commonly used antibiotic injections for patients. However, these type of injections should be taken only under supervision of highly qualified doctors as it may lead to bad result also if taken in excess or consumed without prescription. Respiratory difficulties,Nausea,vomiting,Diarrhea,Stomach pain and Swelling of joints are common side effects of these drugs.Moreover, antibiotic injections are not effective against flu or cold and it is myth that they cure the viral infection.Although, when viral infection is converted to bacterial, then antibiotics are the basic key to heal the patient.