QA CTAB or Cetrimonium bromide can be used for several purposes in the pharma industry. As a pharmaceutical ingredient, it is an antiseptic agent with various antibacterial, antifungal and other antimicrobial properties. It is used in various products such as throat lozenges and antiseptic topical gels and creams for a range of purposes. As a processing aid or auxiliary, it can be used in the downstream vaccine manufacturing process, typically for both bacterial polysaccharide vaccines and viral vaccines (e.g. influenza)..