The invention relates to an oily composition of a non-steroidal anti-inflammatory agent (NSAIA) for parenteral administration with at least one micronised NSAIA, having an acid function and a biocompatible oily vehicle, such that said NSAIA is in the form of a free acid and said composition does not contain any added liquid agent that can solubilise said NSAIA. The invention also relates to the veterinary use thereof.
