EN
The results indicate that ultrasonic scattering deals to following changes of inhalation drugs: condensation of unary and multicomponent solutions of non-volatile compounds, selective condensation of multicomponent mixture of compounds with high volatility and destructive action on chemical structure of compounds. The changes consisting in condensation of drug ought to be taking into consideration in its dosage. In case of destructive changes, the drug ought to be replaced by another one, which is less sensitive to ultrasonic action.