Use of certain anionic surfactants to enhance antimicrobial effectiveness of ophthalmic compositions
First Claim
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1. A method of improving or enhancing the antimicrobial efficacy of an ophthalmic composition comprising a cationic antimicrobial, an anionic polyelectrolyte and an active ingredient, said method comprising adding to said composition an antimicrobial-enhancing amount of an anionic surfactant selected from the group consisting of:
- a) a compound of formula;
##STR4## wherein;
R1 =C4 -C27 saturated or unsaturated hydrocarbon;
M=H or a pharmaceutically acceptable salt; and
n=1, 2 or 3; and
b) a compound of formula;
##STR5## wherein;
R2 =C4 -C27 saturated or unsaturated hydrocarbon;
M=H or a pharmaceutically acceptable salt; and
n=1, 2 or 3.
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Abstract
Certain anionic surfactants are used to enhance antimicrobial effectiveness in comfortable, sustained release ophthalmic compositions containing polyelectrolytes, such as carboxyvinyl polymers, polystyrene sulfonic acid polymers and cationic exchange resins, as well as at least one active ingredient.
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Citations
16 Claims
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1. A method of improving or enhancing the antimicrobial efficacy of an ophthalmic composition comprising a cationic antimicrobial, an anionic polyelectrolyte and an active ingredient, said method comprising adding to said composition an antimicrobial-enhancing amount of an anionic surfactant selected from the group consisting of:
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a) a compound of formula;
##STR4## wherein;
R1 =C4 -C27 saturated or unsaturated hydrocarbon;
M=H or a pharmaceutically acceptable salt; andn=1, 2 or 3; and b) a compound of formula;
##STR5## wherein;
R2 =C4 -C27 saturated or unsaturated hydrocarbon;
M=H or a pharmaceutically acceptable salt; andn=1, 2 or 3. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16)
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11. The method of claim I wherein said surfactant is selected from the group consisting of lauroyl sarcosine, oleoyl sarcosine, myrstoyl sarcosine, cocoyl sarcosine, stearoyl sarcosine, pelargodoyl sarcosine and sodium capryl lactylate.
Specification