Solid preparations obtainable by the melt extrusion of A) at least one active agent, B) a mixture of B1) 10 to 90 wt.% of a water-soluble, thermoplastic polymer and B2) 10 to 90 wt.% of a low-substituted hydroxypropyl cellulose and C) 0 to 50 wt.% in relation to the total quantity of the preparation of common pharmaceutical auxiliaries.