Phenolysiron vaccine is a drug created to combat many dangerous diseases, but it has gained the greatest popularity due to the reduction in the virulence of influenza. The main active ingredient is alkaline phenolcarboxylic acid. An extract from yucca leaves was used to create the vaccine. Through research in the laboratory, it was found that phenols have an antiviral effect and are able to affect various groups of microorganisms. Thanks to this, the basis for creating a phenolized vaccine emerged. The first method of obtaining a vaccine was developed on the basis of American research, and later this discovery was used throughout the world. Thanks to the use of such