The effect of royal jelly and pollen on selected enzymes and bilirubine in plasma as well as TRI metabolites urine level was tested in experimental animals exposed to TRI vapours. IT was shown that mentioned above preparations applied during exposure to TRI cause lower increase of A1AT, AspAT, AP activity and bilirubine level in comparison with animals that were given TRI only. Urine excretion of TRI metabolite - trichloroacetic acid was reduced. Excretion of the second metabolite - tricliloroethanol was not changed.