Beer is packaged in several types of containers: glass bottles, aluminum cans, and PET bottles. Given that PET packaging is the most widely used due to its simplicity and cost-effectiveness, the aim of this preliminary study was to determine the concentration and types of phthalates (dimethyl phthalate, diethyl phthalate, diisobutyl phthalate, dibutyl phthalate, bis(2-ethylhexyl) phthalate, di-n-octyl phthalate) in glass bottles, PET packaging, and cans. Considering the properties of PET packaging, which is made from polymer materials to which various substances for hardening, softening, and coloring are added, it is expected that beers packaged in such containers will have higher concentrations of phthalates, and chemicals associated with microplastics. Phthalates in the samples will be determined using the GC-MS method, and cans will also be subjected to FTIR technology (Fourier Transform Infrared Spectroscopy). The results show that beers packaged in PET may contain significant amounts of phthalates; particularly high concentrations of dibutyl phthalate were found in all samples, with the highest concentration detected in the PET bottle sample. However, beers in cans showed even higher levels of certain phthalates, such as bis(2-ethylhexyl) phthalate, further demonstrating that plastics, including phthalates, represents a serious health issue and should be treated as such.