-Acetylcysteine is an effective analog of glutathione in reactions with reactive oxygen species.

The kinetic characteristics of the interaction of -acetylcysteine (ASH) with reactive oxygen species (ROS), peroxyl radicals and hydrogen peroxide were determined. It was found that in terms of activity ASH in these reactions is similar to glutathione GSH, the main endogenous bioantioxidant. The kinetics of heat release in the interaction of GSH and ASH with HO was studied for the first time by isothermal calorimetry.