What do hospitals use instead of hydrogen peroxide?

Why Hospitals Are Moving Beyond Hydrogen Peroxide

While hydrogen peroxide has long been a staple in hospital disinfection protocols, many medical facilities are now turning to more effective alternatives—particularly peracetic acid. This shift is driven by the need for stronger, faster-acting disinfectants that can tackle a broader spectrum of pathogens.

Peracetic acid-based solutions are powerful multitaskers: they’re sporicidal, fungicidal, bactericidal, and virucidal. This means they can destroy not only bacteria and viruses but also tough microbial spores and fungi—something where hydrogen peroxide often falls short. In environments where sterilization must be absolute, such as operating rooms or endoscopy units, that level of reliability is crucial.

Medical devices, hemodialyzers, and endoscopes—tools that enter the body and are difficult to clean—are frequently disinfected using peracetic acid. Because these instruments can’t always withstand high heat, peracetic acid offers a highly effective low-temperature sterilization method. Its rapid action and ability to break down into harmless residues (acetic acid and oxygen) make it both efficient and environmentally safer than many chemical alternatives.

Hospitals prioritize patient safety above all, and that includes ensuring every instrument is free from contamination. With rising concerns about healthcare-associated infections, the move toward more robust disinfectants like peracetic acid reflects a necessary evolution in infection control. It’s not just about replacing hydrogen peroxide—it’s about using the right tool to protect both patients and staff in high-risk settings.