Patent 7563773 was granted and assigned to Merial on July, 2009 by the United States Patent and Trademark Office.
This invention provides for, inter alia, oral homogeneous veterinary pastes for the treating, controlling and preventing of endo- and ectoparasite infections in warm-blooded animals or birds, such as horses and household pets. This invention further provides for a process of preparing these veterinary pastes and for a method for increasing the bioavailability of the anthelmintic agents contained in the paste in the warm-blooded animal or bird. The inventive oral homogeneous anthelmintic pastes comprise a first anthelmintic agent, for example, prazequantel and/or pyrantel, and at least one marcrolide anthelmintic compound, a solvent, which dissolves both the first anthelmintic agent and second the macrolide anthelmintic compound, and a thickening agent. The inventive oral homogeneous pastes achieve a better bioavailability of the two active anthelmintic agents than when the two actives are in suspension and not dissolved