The invention relates to a composition for producing a temporary obstruction of the intestine of a mammal, wherein the composition is flowable and can be solidified at a desired location in the intestine to form a solid plug, the structure of which can be modified for the subsequent, at least partial removal of the obstruction, wherein the composition is or comprises a flowable solution, suspension or dispersion in a solvent or solvent mixture, characterised in that the composition comprises the following: a) a suspension of a solid in water or in an aqueous solvent mixture having a content of water that is an amount X above the liquid limit of the suspension； b) a dehydrating agent in an amount sufficient to bind the amount X of water such that the liquid limit of the suspension is exceeded as a result of the dehydration； and c) an agent for passivating the dehydrating agent.
