Pharmaceutical Compositions Having Improved Dissolution Profiles For Poorly Soluble Drugs

1 . A composition comprising 1-(6-amino-3,5-difluoropyridin-2-yl)-8-chloro-6-fluoro-7-(3-hydroxyazetidin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid or a salt thereof, a crystallization inhibitor suitable for reducing crystallization of 1-(6-amino-3,5-difluoropyridin-2-yl)-8-chloro-6-fluoro-7-(3-hydroxyazetidin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid or a salt thereof, and a pH modifier selected from the group consisting of NaOH, LiOH, KOH, Na 2 CO 3 , NaHCO 3 , K 2 CO 3 , KHCO 3 , NaH 2 O 4 , Na 3 PO 4 , Na 3 PO 4 , KH 2 PO 4 , K 2 HPO 4 , K 3 PO 4 , Ca(OH) 2 , Mg(OH) 2 , Zn(OH) 2 , Al(OH) 3 , pyridoxine, triethanolamine, ammonium hydroxide, cytosine, diethylamine, meglumine, ornithine, glycine, lysine, arginine, valine, proline, aspartic acid, alanine, asparagine, isoleucine, leucine, methionine, threonine, choline hydroxide, procaine, diethylethanolamine, glucosamine, guanine, nicotinamide, piperazine, guanidine, olamine, piperidine, triethylamine, tromethamine, benzathine, adenine, and mixtures thereof, said composition providing a measurable improvement in dissolution rate of the 1-(6-amino-3,5-difluoropyridin-2-yl)-8-chloro-6-fluoro-7-(3-hydroxyazetidin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid or a salt thereof.

2 . Use of 1-(6-amino-3,5-difluoropyridin-2-yl)-8-chloro-6-fluoro-7-(3-hydroxyazetidin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid or a salt thereof, a crystallization inhibitor capable of reducing crystallization of 1-(6-amino-3,5-difluoropyridin-2-yl)-8-chloro-6-fluoro-7-(3-hydroxyazetidin-1)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid or a salt thereof, and a pH modifier selected from the group consisting of NaOH, LiOH, KOH, Na 2 CO 3 , NaHCO 3 , K 2 CO 3 , KHCO 3 , NaH 2 PO 4 , Na 2 HPO 4 , Na 3 PO 4 , KH 2 HPO 4 , K 3 PO 4 , K 3 PO 4 , Ca(OH) 2 , Mg(OH) 2 , Zn(OH) 2 , Al(OH) 3 , pyridoxine, triethanolamine, ammonium hydroxide, cytosine, diethylamine, meglumine, ornithine, glycine, lysine, arginine, valine, proline, aspartic acid, alanine, asparagine, isoleucine, leucine, methionine, threonine, choline hydroxide, procaine, diethylethanolamine, glucosamine, guanine, nicotinamide, piperazine, guanidine, olamine, piperidine, triethylamine, tromethamine, benzathine, adenine, and mixtures thereof for the manufacture of a composition providing a measurable improvement in dissolution rate of the 1-(6-amino-3,5-difluoropyridin-2-yl)-8-chloro-6-fluoro-7-(3-hydroxyazetidin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid or a salt thereof for treating disease in a patient by administering thereto said composition.

3 . A composition or use according to claim 1 or 2 wherein the salt of 1-(6-amino-3,5-difluoropyridin-2-yl)-8-chloro-6-fluoro-7-(3-hydroxyazetidin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid comprises meglumine.

4 . A composition or use according to anyone of claims 1 - 3 providing at least a 5% increase in dissolution rate.

5 . A composition or use according to anyone of claims 1 - 4 wherein the dose of the drug is from 0.03 to 200 mg/kg body weight.