Abstract: The pharmaceutical composition has a dipeptide or a pharmaceutically-acceptable salt thereof as an active ingredient. The depeptide has the general formula ##EQU1## wherein R.sub.1 and R.sub.2 are the same or different and each is either phenyl or indolyl. administration composition may be in a solid form for oral administraion in which case the active ingredient is surrounded by an enteric coating. The composition may also be in a liquid form for administration by injection in which case the active ingredient is dissolved in a physiologically compatible sterile liquid. The composition is useful in the treatment of inflammation in mammals and may be administered daily in an amount of about 40mg of the dipeptide or salt per kilogram weight of the mammal.