Abstract: Ammonia is used as a processing aid in a method for forming a sprayed solid dispersion comprising an active agent, wherein the active agent, in a free acid form, has a pKa?7 and a solubility?40 mg/mL in the spray solvent. Ammonia is subsequently removed from the sprayed solid dispersion. Sprayed solid dispersions formed by the disclosed method are also disclosed.

Abstract: In a process for preparing an esterified cellulose ether a cellulose ether is esterified with (i) an aliphatic monocarboxylic acid anhydride or (ii) a dicarboxylic acid anhydride or (iii) a combination of an aliphatic monocarboxylic acid anhydride and a dicarboxylic acid anhydride in the presence of an alkali metal carboxylate and an aliphatic carboxylic acid, wherein the molar ratio [alkali metal carboxylate/anhydroglucose units of cellulose ether] is not more than [1.20/1] and the molar ratio [aliphatic carboxylic acid/anhydroglucose units of cellulose ether] is from [3.55/1] to [9.0/1].

Abstract: Disclosed are compositions including a solid dispersion comprising a dispersion polymer, a basic low-water solubility active, and an anionic counterion, as well as methods of making and using the compositions.

Abstract: Disclosed are compositions including a solid dispersion comprising a dispersion polymer, a basic low-water solubility active, and an anionic counterion, as well as methods of making and using the compositions.

Abstract: Pharmaceutical compositions are provided comprising an active agent and a dextran polymer derivative. The compositions include from 0.01 to 99 wt % of an active agent and from 1 to 99.99 wt % of a dextran polymer derivative. The dextran polymer derivative is selected from dextran acetate, dextran propionate, dextran succinate, dextran acetate propionate, dextran acetate succinate, dextran propionate succinate, dextran acetate propionate succinate, and mixtures thereof.

Abstract: Disclosed are compositions including a solid dispersion comprising a dispersion polymer, a basic low-water solubility active, and an anionic counterion, as well as methods of making and using the compositions.

Abstract: Pharmaceutical compositions of a low-solubility drug and lower alkanoate-, phthalate- and trimellitate esters of hydroxypropyl methyl cellulose and lower alkanoate- and succinate esters of cellulose and methyl cellulose are disclosed that provide enhanced concentrations of the drug in a use environment.

Abstract: Disclosed are compositions including a solid dispersion comprising a dispersion polymer, a basic low-water solubility active, and an anionic counterion, as well as methods of making and using the compositions.

Abstract: In a process for preparing an esterified cellulose ether a cellulose ether is esterified with (i) an aliphatic monocarboxylic acid anhydride or (ii) a dicarboxylic acid anhydride or (iii) a combination of an aliphatic monocarboxylic acid anhydride and a dicarboxylic acid anhydride in the presence of an alkali metal carboxylate and an aliphatic carboxylic acid, wherein the molar ratio [alkali metal carboxylate/anhydroglucose units of cellulose ether] is not more than [1.20/1] and the molar ratio [aliphatic carboxylic acid/anhydroglucose units of cellulose ether] is from [3.55/1] to [9.0/1].

Abstract: Two or more esters of a cellulose ether, each having the same ether and ester substituents but different weight average molecular weights are prepared in a process which comprises the steps of esterifying a cellulose ether with (i) an aliphatic monocarboxylic acid anhydride or (ii) a dicarboxylic acid anhydride or (iii) a combination of an aliphatic monocarboxylic acid anhydride and a dicarboxylic acid anhydride in the presence of an aliphatic carboxylic acid as a reaction diluent in two or more separate reactions, wherein in each reaction a different molar ratio [aliphatic carboxylic acid/anhydroglucose units of cellulose ether] is used to produce esters of the cellulose ether of different weight average molecular weights.

Abstract: Methods and compositions for maintaining an active agent in an intra-articular space are disclosed. Methods of delivering the compositions to an intra-articular space and methods of making the compositions also are disclosed. The compositions comprise an active agent and a polymer comprising at least one cationic group. A fluid including the composition may be injected into an intra-articular space in a human or animal whereby the composition associates with endogenous material in the intra-articular space. In some embodiments, the fluid further comprises a poorly aqueous soluble polymer.

Abstract: Solid dry powder compositions comprising active agents and dextran polymer derivatives comprising an ester-linked amine-containing substituent and an alkyl ester substituent are disclosed, as are methods for making such compositions.

Abstract: Disclosed are polymers of hydroxypropyl methyl cellulose acetate succinate (HPMCAS) with unique degrees of substitution of hydroxypropoxy, methoxy, acetyl, and succinoyl groups. When used in making compositions comprising a low-solubility active agent and such polymers, the polymers provide increased aqueous concentrations and/or improved physical stability of the active agent.

Abstract: Pharmaceutical compositions of a low-solubility drug and lower alkanoate-, phthalate- and trimellitate esters of hydroxypropyl methyl cellulose and lower alkanoate- and succinate esters of cellulose and methyl cellulose are disclosed that provide enhanced concentrations of the drug in a use environment.

Abstract: Pharmaceutical compositions are provided comprising an active agent and a dextran polymer derivative. The compositions include from 0.01 to 99 wt % of an active agent and from 1 to 99.99 wt % of a dextran polymer derivative. The dextran polymer derivative is selected from dextran acetate, dextran propionate, dextran succinate, dextran acetate propionate, dextran acetate succinate, dextran propionate succinate, dextran acetate propionate succinate, and mixtures thereof.

Abstract: Cationic dextran polymer derivatives including an ester-linked amine-containing substituent and an alkyl ester substituent and methods for making such dextran polymer derivatives are disclosed.

Abstract: Pharmaceutical compositions are provided comprising an active agent and a dextran polymer derivative. The compositions include from 0.01 to 99 wt % of an active agent and from 1 to 99.99 wt % of a dextran polymer derivative. The dextran polymer derivative is selected from dextran acetate, dextran propionate, dextran succinate, dextran acetate propionate, dextran acetate succinate, dextran propionate succinate, dextran acetate propionate succinate, and mixtures thereof.

Abstract: Disclosed are polymers of hydroxypropyl methyl cellulose acetate succinate (HPMCAS) with unique degrees of substitution of hydroxypropoxy, methoxy, acetyl, and succinoyl groups. When used in making compositions comprising a low-solubility active agent and such polymers, the polymers provide increased aqueous concentrations and/or improved physical stability of the active agent.

Abstract: Solid dry powder compositions comprising active agents and dextran polymer derivatives comprising an ester-linked amine-containing substituent and an alkyl ester substituent are disclosed, as are methods for making such compositions.

Abstract: Methods and compositions for maintaining an active agent in an intra-articular space are disclosed. Methods of delivering the compositions to an intra-articular space and methods of making the compositions also are disclosed. The compositions comprise an active agent and a polymer comprising at least one cationic group. A fluid including the composition may be injected into an intra-articular space in a human or animal whereby the composition associates with endogenous material in the intra-articular space. In some embodiments, the fluid further comprises a poorly aqueous soluble polymer.