Pharmaceutical compositions comprising rifaximin and amino acids, preparation methods and use thereof

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United States of America Patent

PATENT NO 9452157
SERIAL NO

13935331

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Abstract

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The present invention relates to rifaximin compositions comprising amino acids, characterized in that they increase rifaximin solubility in aqueous solutions and are useful in the treatment of disease wherein amino acids and rifaximin are efficacious. The present invention also relates to pharmaceutical compositions comprising rifaximin or one of the pharmaceutically acceptable salts thereof and one or more amino acid(s), wherein the molar ratio between the amino acid(s) and rifaximin is from 1:1 to 10:1, together with pharmaceutically acceptable excipients. The present invention further relates to rifaximin crystals obtained by dissolving rifaximin and amino acids in solutions formed by ethanol/water and evaporating the solution.

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Patent Owner(s)

Patent OwnerAddress
ALFASIGMA S P A40133 BOLOGNA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Braga, Dario Bologna, IT 51 634
Chelazzi, Laura Bologna, IT 4 10
Grepioni, Fabrizia Bologna, IT 4 10
Kindt, Maddalena Bologna, IT 2 7
Viscomi, Giuseppe Claudio Bologna, IT 82 622

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