Probiotic microorganisms are an important element of the diet not only of humans but also of animals. Their presence in the body is associated with its proper functioning. Numerous, although not fully recognized relationships between prohealth microorganisms and body systems, organs and cells are increasingly complex. Probiotic microorganisms play the role of specific engineers, performing many important functions (directly or indirectly) in the factory of life, which is a properly functioning organism. The aim of this study was to characterize the JOY DAY - forest fruits liquid probiotic drink of Living Food Sp. z o.o. The product is one of many from the large range of biofunctional products offered by the manufacturer and is a fluid obtai...