Aqueous liquid preparation having improved intraocular...

A - Human Necessities – 61 – K

Patent

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Details

A61K 31/496 (2006.01) A61K 9/08 (2006.01) A61K 47/02 (2006.01) A61K 47/36 (2006.01) A61P 27/02 (2006.01) A61P 31/04 (2006.01)

Patent

CA 2666440

An object is to provide an ophthalmic aqueous liquid preparation excellent in the retention of gatifloxacin in a tear fluid and the penetration of gatifloxacin into an aqueous humor and a conjunctiva. Another object is to prevent the formation of any precipitate and the reduction in viscosity in the aqueous liquid preparation. An aqueous liquid preparation comprising gatifloxacin, a pharmacologically acceptable salt thereof or a hydrate of gatifloxacin or the salt and at least 0.15 w/v% of xanthan gum enables to improve the retention and penetration of gatifloxacin. When at least 0.2 w/v% of sodium chloride is added to the aqueous liquid preparation, the formation of any precipitate and the reduction in viscosity in the aqueous liquid preparation can be prevented.

L'invention a pour objet l'obtention d'une préparation liquide aqueuse présentant d'excellentes propriétés de rétention de gatifloxacine dans un liquide lacrymal et de pénétration de gatifloxacine dans une humeur aqueuse et dans une conjonctive. Un autre objet est de prévenir la formation d'un quelconque précipité et la diminution de viscosité de la préparation liquide aqueuse. Une préparation liquide aqueuse comprenant de la gatifloxacine, un sel pharmaceutiquement acceptable de cette dernière ou un hydrate de gatifloxacine ou son sel et au moins 0,15% en poids par volume de gomme de xanthane permettent d'améliorer la rétention et la pénétration de gatifloxacine. Lorsqu'au moins 0,2% en poids par volume de chlorure de sodium est ajouté à la préparation liquide aqueuse, la formation d'un quelconque précipité et la diminution de viscosité de la préparation liquide aqueuse peuvent être empêchées.

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