Olive leaves are one of the byproducts of olive oil production and although its potential is recognized, it is not sufficiently exploited. Studies have shown that olive leaves are rich in phenolic compounds, most of which is the oleuropein component. Oleuropein as well as other phenolic components identified and described in this paper exerts antioxidative, antiinflammatory, cardioprotective and neuroprotective effects. As such, olive leaf extract is already used as a dietary supplement for the purpose of improving human health. Because of their adsorptive abilities, zeolites are primarily used in removing various impurities, but in addition they have proven to be a good carrier for drugs. If zeolite binds compounds useful for human health such as phenols from olive leaves we would achieve a nutrition supplement with strong antioxidant capabilities. Various zeolites exhibit different adsorptive abilities for certain compounds. Therefore, a change in the phenolic composition of the olive leaves after adding four different zeolites (zeolite A, TMAZ, PMA, PMA-O2) was observed with UHPLC method with a diode array detector. It has been noted that the concentrations of oleuropein, 3-hydroxythyrosol and pinorezinol are reduced for all zeolites, which is not the case for thyrosol, 3-p-coumaric acid and p-hydroxyphenylacetic acid for all the zeolites mentioned. The highest decrese in the concentration of 6 phenols investigated was observed by the addition of PMA zeolite.