Tetracycline stabilizing formulations

A - Human Necessities – 61 – K

Patent

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A61K 9/20 (2006.01) A61K 9/00 (2006.01)

Patent

CA 2737475

An aqueous solution comprising a chelating agent at a concentration of about 0.1-0.5%, and an antioxidant agent at a concentration of about 0.1-0.5%, wherein the pH of the solution is between about 4.5 and about 7.5 is disclosed. The aqueous solution may comprise a tetracycline composition wherein the tetracycline is formulated in the aqueous solution. A method for reducing the rate and/or overall extent of degradation of a tetracycline in aqueous solution, comprising admixing in a tetracycline containing solution a chelating agent at a concentration of about 0.1-0.5% and an antioxidant at a concentration of about 0.1-0.5% and, as necessary, adjusting the pH of the solution so that it is between about 4.5 and about 7.5 is also disclosed. Tetracycline compositions of the invention may be used to treat inflammatory and/or tissue degeneration conditions.

La présente invention concerne une solution aqueuse comprenant un agent chélateur à une concentration denviron 0,1 à 0,5 %, et un agent antioxydant à une concentration denviron 0,1 à 0,5 %, le pH de la solution étant compris entre environ 4,5 et environ 7,5. La solution aqueuse peut comprendre une composition de tétracycline, la tétracycline étant formulée dans la solution aqueuse. La présente invention concerne en outre un procédé pour réduire le taux et/ou le degré global de dégradation dune tétracycline en solution aqueuse, comprenant le mélange dans une solution contenant de la tétracycline dun agent chélateur à une concentration denviron 0,1 à 0,5 % et dun antioxydant à une concentration denviron 0,1 à 0,5 % et, si nécessaire, lajustement du pH de la solution de sorte quil soit compris entre environ 4,5 et environ 7,5. Les compositions de tétracycline de linvention peuvent être utilisées pour traiter des affections inflammatoires et/ou de dégénérescence tissulaire.

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