In the present day, products rich in high protein content have gained considerable popularity, particularly among the active and youthful population. These products serve as convenient, readily accessible sources of nutrition, offering a swift and protein-rich meal option. They are frequently consumed following physical activities to aid in protein synthesis, contributing to the development of muscle mass. However, a concern arises regarding the product's actual protein quality due to potential inaccuracies in protein quantity indication on the packaging. As a result, the objective of this study was to assess the protein content in high protein products and subsequently compare the determined values with those specified on the product labels. Furthermore, an evaluation was conducted to ascertain whether the proclaimed nutritional and health claims align with the stipulations outlined in Regulation (EC) no. 1924/2006. The Kjeldahl method was employed to quantify the protein content in 43 distinct high protein products, all commercially available within the Croatian market. The results reveal that the measured protein content in all examined samples falls within the acceptable deviation limits established by the European Commission. Moreover, all products bearing declared nutritional and health claims demonstrate conformity with the provisions outlined in Regulation (EC) no. 1924/2006.