Meropenem injection is used to treat skin and abdominal stomach area infections caused by bacteria and meningitis infection of the membranes that surround the brain and spinal cord in adults and children 3 months of age and older Meropenem injection is in a class of medications called antibiotics also known as a carbapenem type antibiotic It works by killing bacteria that cause infection Antibiotics such as meropenem injection will not work for colds flu or other viral infections Taking antibiotics when they are not needed increases your risk of getting an infection later that resists antibiotic treatment