Abstract: The present invention provides perorally administrable drug release systems and processes for producing perorally administrable systems having a drug-containing core and a sheath which surrounds the core and comprises a swellable shell and an elastic coating which surrounds at least the shell, the sheath having at least one orifice.

Abstract: A pharmaceutical product containing an active pharmaceutical ingredient and having a controllable release of the active pharmaceutical ingredient. The pharmaceutical product comprises yeast that is capable of fermentation. The carbon dioxide production of the fermentation releases the active pharmaceutical ingredient from the pharmaceutical product.

Abstract: Gastroretentive systems which have at least one release device for at least one active pharmaceutical ingredient and at least one swelling body that is connected to the release device.

Abstract: The invention relates to a piston pump for a slip-controlled, hydraulic vehicle brake system. In order to be able to simply and inexpensively produce the piston pump as a stepped piston pump, the invention embodies a piston as a tubular deep drawn part made of sheet metal, with an outwardly protruding circumferential bead. The bead is produced by axially compressing the piston. The bead constitutes an axial support for a guide ring and sealing ring placed onto the piston. A disk-shaped, abrasion resistant striking piece is press-fitted into an open end of the tubular piston, and is used by the piston for resting against a circumference of a cam element used for the stroke drive.