Abstract: Composition and system for oral administration of chemicals or medicaments, and applications thereof (for example as medicament, dietetic product, food product, bait). Said composition comprises essentially (a) from 3% to 20% by weight of at least one water-insoluble polymer selected from the polyamides and ethylene copolymers such as ethylene/vinyl acetate; (b) from 35% to 60% by weight of lipidic substances, at least one of these lipidic substances being solid at room temperature, the melting point of the solid lipidic substance(s) being lower than that of the polymer(s); (c) from 5% to 45% of at least one paletable substance; (d) from 0% to 50% of another suitable complementary ingredient. Said composition can be obtained by (i) melting of the solid lipidic substances at a temperature lower than the melting point of the polymer(s), and (ii) mixing of the polymer(s) and the other constituents at the same temperature as for (i). A method of preparing said systems and composition is also disclosed.

Abstract: Device capable of being used in combination with a restraining or ornamental collar or with any other support for animals, intended to make possible the controlled and optically continuous and complete release of chemical substances, including medicaments, for more or less lengthy, continuous or noncontinuous, periods and process for producing the said device. The device comprises a polymeric matrix enclosing at least one active substance capable of being released towards an appropriate area of an animal. The device is composed of at least one tubular component of any cross-section, containing at least one layer of flexible polymeric matrix containing at least one active substance, the length of the said tubular component can be regulated to adjust the daily dose of the active substance to the weight of the animal and the ratio of the external surface area of said tubular component to the thickness of its' wall is as great as possible to obtain linear removal of the active substance.