Аннотация:Hyaluronic acid is a promising coating for providing biocompatibility to nanodiamond-antibiotic composite. It was found that the adsorption of Miramistin on nanodiamonds having initial negative zeta-potential increases the adsorption of hyaluronic acid, but it remains lower than in the case of positively charged nanodiamonds, for which pre-adsorption of Miramistin does not affect. Note that the largest adsorption of hyaluronic acid is observed in the cases, when Miramistin neutralizes surface charge of nanoparticles.