Spill resistant pharmaceutical compositions in semi-solid form
First Claim
1. A pharmaceutical formulation for oral administration from a squeezable container, comprising a pharmaceutical agent in a vehicle comprising a liquid base and a thickening agent, the formulation consisting of mutually compatible components, wherein said thickening agent comprises components selected from the group consisting of cellulose derivatives in an amount of less than about 2 weight % by volume, and water-soluble carboxyvinyl polymer in an amount less than 1 weight % by volume, the formulation having the following properties:
- an initial viscosity within the range of about 5,000 cps to about 12,500 cps;
a viscometric yield value of a semi-solid;
a spill resistant consistency permitting the formulation to be squeezed by light manual pressure through a channel of about 1 to about 5 mm, to spread in a spoon bowl sufficiently quickly for accurate measurement, and to remain in the spoon bowl without spilling for at least about one second and less than about 20 seconds on spoon tilting, and for at least about 30 seconds upon spoon vibration;
homogeneity wherein the components do not separate under conditions of use; and
storage stability.
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Abstract
A spill-resistant pharmaceutical formulation for oral administration from a squeezable container comprises a pharmaceutical agent in a suitable vehicle comprising a liquid base and a thickening agent, the formulation consisting of mutually compatible components and having the following properties: a viscosity within the range of about 7500 to about 12,500 cps using a Brookfield Viscometer with a ‘C’ spindle with Helipath movement at a spindle speed of 10 rpm and 20-25° C., a viscometric yield value of a semi-solid, a spill-resistant consistency permitting the composition to be squeezed by light manual pressure through a channel, to spread in a spoon bowl sufficiently quickly for accurate measurement, and to remain in the spoon bowl without spilling on spoon inversion, tilting at 90 degrees, and vibration, homogeneity such that the components do not separate under conditions of use, and a storage stability such that the foregoing properties are retained for at least two years shelf life. A method for producing a formulation for a spill-resistant pharmaceutical composition comprises combining a per-unit dose effective amount of a pharmaceutical agent with suitable vehicle components comprising a liquid base and a thickening agent, and testing the formulation for acceptance criteria.
95 Citations
39 Claims
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1. A pharmaceutical formulation for oral administration from a squeezable container, comprising a pharmaceutical agent in a vehicle comprising a liquid base and a thickening agent, the formulation consisting of mutually compatible components, wherein said thickening agent comprises components selected from the group consisting of cellulose derivatives in an amount of less than about 2 weight % by volume, and water-soluble carboxyvinyl polymer in an amount less than 1 weight % by volume, the formulation having the following properties:
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an initial viscosity within the range of about 5,000 cps to about 12,500 cps;
a viscometric yield value of a semi-solid;
a spill resistant consistency permitting the formulation to be squeezed by light manual pressure through a channel of about 1 to about 5 mm, to spread in a spoon bowl sufficiently quickly for accurate measurement, and to remain in the spoon bowl without spilling for at least about one second and less than about 20 seconds on spoon tilting, and for at least about 30 seconds upon spoon vibration;
homogeneity wherein the components do not separate under conditions of use; and
storage stability.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A pharmaceutical formulation for oral administration from a squeezable container, comprising a pharmaceutical agent in a vehicle comprising a liquid base comprising from about 30% to about 50% glycerin, and a thickening agent, the formulation consisting of mutually compatible components and having the following properties:
- an initial viscosity within the range of about 5,000 cps to about 12,500 cps;
a viscometric yield value of a semi-solid;
a spill-resistant consistency permitting the formulation to be squeezed by light manual pressure through a channel of about one to about five mm, to spread in a spoon bowl sufficiently quickly for accurate measurement, and to remain in the spoon bowl without spilling for at least about 1 second but less than twenty seconds on spoon tilting, and for at least about 30 seconds upon spoon vibration;
homogeneity wherein the components do not separate under conditions of use; and
storage stability for at least three months of storage at elevated temperature, with viscosity remaining within a range of 50% less to 100% more than the initial viscosity. - View Dependent Claims (27, 28, 29, 33, 34)
- an initial viscosity within the range of about 5,000 cps to about 12,500 cps;
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30. A pharmaceutical composition comprising:
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a water-soluble carboxyvinyl polymer in an amount of from about 0.25% to about 0.5% by weight;
a liquid base comprising glycerin and/or propylene glycol; and
a pharmaceutical agent, the composition being a homogeneous semi-solid and dispensable from a squeezable container into a spoon, the composition spilling from the spoon within 20 seconds after tilting the spoon. - View Dependent Claims (31, 35, 36)
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32. A pharmaceutical composition comprising:
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a water-soluble carboxyvinyl polymer in an amount of 1.0% by weight or less;
a liquid base comprising glycerin in an amount greater than 15% and propylene glycol; and
a pharmaceutical agent, the composition being a homogeneous semi-solid and dispensable from a squeezable container, and having a viscosity of less than about 12,000 cps. - View Dependent Claims (37, 38, 39)
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Specification