With intravenous administration of the drug, the peak peak concentrations of the drug in the blood, which are 31.6 ± 0.6 μg / ml, are established immediately after its administration. Distribution of the drug to tissues and organs within the first two hours after administration, due to the high rate constant. After the second hour of drug administration, the distribution rate slows down by a factor of 25. The drug is able to accumulate in most body tissues, passes into the interstitial fluid and enters the cells of the body. When the drug is distributed in tissues, the transition from blood to tissue proceeds at a rate of 3.75 times greater than the reverse process of tissue release, which confirms the fact of drug deposition in tissues. Metabolic elimination and biodegradation of the drug is due to the destruction of the lactone ring. As a percentage of the total dose administered, up to 27-32% is metabolized in tissues, the remaining amount is excreted unchanged.