This document is intended to provide guidance for the submission of information and data in support of the efficacy of sterilization processes in drug applications for both human and veterinary drugs. The recommendations in the guidance apply to applications for sterile drug products (new drug applications, new animal drug applications, abbreviated new drug applications, abbreviated antibiotic applications, and abbreviated new animal drug applications). These recommendations also apply to previously approved applications when supplements associated with the sterile processing of approved drugs are submitted. Information and data in support of sterility assurance may also be necessary in investigational new drug and investigational new animal drug applications.