Ancef is a cephalosporin antibiotic. Cephalosporins are part of a larger group of medications known as beta-lactam antibiotics, named after the ring-like "lactam" structure of these drugs. Ancef works by stopping bacteria from making cell walls, which eventually causes the bacteria to die. Cephalosporins are related to penicillin.
Ancef is approved for use in children as young as one month of age. Because the Ancef dosage used in children is based on weight, it is important that your healthcare provider has an accurate weight for your child. It may be best to actually weigh the child, as a child's weight frequently changes.
On occasion, your healthcare provider may recommend this medicine for something other than treating the infections discussed in this article. This is called an "off-label" use. Using Ancef to treat or prevent other types of infections would be examples of off-label uses.