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Currently, systems for encapsulating drugs are widely used to obtain drugs, since they provide both the preservation of the activity of the administered drug and the reduction of side effects from its administration on the gastrointestinal tract. Complexes of natural polysaccharides such as chitosan alginate and chitosan pectin are widely used as such carriers. These complexes have high biological resistance and biodegradability. In addition, they provide the release of the drug at neutral pH values, which corresp...