Dosage form that is protected against misuse and can be heat-shaped without discoloration. It contains: (1) at least one active agent (A) with potential for misuse； (2) optionally auxiliaries (B)； and (3) at least one synthetic or natural polymer (C)； and (4) optionally a wax (D), where (C) or (D) have breaking strength at least 500 N. An independent claim is also included for a method for preparing the new dosage form.
