ESOKOOL - 40 I.V INJ. INJECTION is the injection form of an antibiotic medicine that stops the growth of the infection causing bacteria in your body. It is often injected by a doctor or a nurse either into a vein or a muscle. This medicine is used to treat many different types of infections such as urinary tract, bones and joints, lungs (eg. pneumonia), brain, blood, and some others. This medicine usually makes you feel better within a few days. Follow your doctor's instructions carefully to get maximum benefit.