The present invention relates to a galenic composition suitable for administration to a non-human animal, including at least the following three components: one or more active principles an agent for accelerating delitescence an agent for delaying delitescence, wherein the agent for accelerating delitescence and the agent for delaying delitescence are integrated in the composition so as to form a matrix with the controlled release of the active principle(s). The invention also relates to the uses of said compositions, as well as to a method for measuring the in vitro delitescence thereof.
