Final answer:
The half-life of Ancef (cephalexin) is not specified in the provided information. It is recommended to consult reliable drug references or a healthcare professional for accurate information.
Step-by-step explanation:
The half-life of Ancef (cephalexin) refers to the time it takes for half of the drug to be eliminated from the body. Unfortunately, the provided information does not specify the half-life of Ancef. It is best to consult reliable drug references or a healthcare professional to obtain accurate information about the half-life of Ancef.