5-aminosalicylic acid solid preparation improved in...

A - Human Necessities – 61 – K

Patent

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Details

A61K 31/606 (2006.01) A61K 47/02 (2006.01) A61K 47/12 (2006.01) A61K 47/20 (2006.01) A61K 47/22 (2006.01) A61P 1/04 (2006.01)

Patent

CA 2539799

The change to brown color of 5-aminosalicylic acid solid preparations is inhibited, and the properties as drug product at production of 5- aminosalicylic acid solid preparations are preserved for a prolonged period of time. There are provided solid preparations obtained by formulating of 5- aminosalicylic acid or its salt and a discoloration preventive agent into medical preparations, which solid preparations exhibit in CIELAB color space a color difference of 10.5 or less brought about by storage at 80~C for one week. The above discoloration preventive agent is characterized by containing at least one member selected from the group consisting of a thiol compound, a sulfide compound, an acid anhydride and hygroscopic compounds.

L'invention a pour objet d'inhiber le brunissement de préparations solides à base d'acide 5-aminosalicylique et de préserver les propriétés de produit médicamenteux lors de la production de préparations solides à base d'acide 5-aminosalicylique pendant une durée prolongée. L'invention concerne des préparations solides obtenues par incorporation d'acide 5-aminosalicylique ou de son sel et d'un agent anti-décoloration dans des préparations médicales, ces préparations solides présentant, dans l'espace couleur CIELAB, une différence de couleur inférieure ou égale à 10,5 obtenue par stockage à 80 ·C pendant une semaine. L'agent anti-décoloration susmentionné se caractérise en ce qu'il contient au moins un élément choisi dans le groupe constitué par un composé thiol, un composé sulfure, un anhydride d'acide et des composés hygroscopiques.

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