Moistureless oral drug delivery formulation and method for preparing same
First Claim
1. An oral drug delivery system, in the form of an oral ointment formulation, comprising one or more hydrocolloids solids in an amount within the range of from about 0.5 to about 60% by weight of the formulation, containing less than about 5% by weight moisture, and an ointment base therefor, said formulation having resistance to hardening even upon prolonged storage or filling into containers, whereupon application of said formulation at the desired site of action in the oral cavity, moisture in said oral cavity causes said hydrocolloid to swell and medicament to be released and to adhere to and be retained at the desired site of action.
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Accused Products
Abstract
Oral drug delivery systems are provided formed of compositions which include one or more hydrocolloids solids, such as gelatin, pectin, and sodium carboxymethyl cellulose, and preferably mixtures thereof, which solids contain less than about 5% by weight moisture and preferably comprise less than about 50% by weight of the total formulation; and an ointment base such as mineral oil containing dispersed polyethylene (Plastibase). Such oral drug delivery compositions may be used to deliver to the oral mucosa active ingredients such as steroids, anti-fungal agents, anti-bacterial agents and the like and do not harden even upon prolonged storage or upon filling into containers.
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Citations
19 Claims
- 1. An oral drug delivery system, in the form of an oral ointment formulation, comprising one or more hydrocolloids solids in an amount within the range of from about 0.5 to about 60% by weight of the formulation, containing less than about 5% by weight moisture, and an ointment base therefor, said formulation having resistance to hardening even upon prolonged storage or filling into containers, whereupon application of said formulation at the desired site of action in the oral cavity, moisture in said oral cavity causes said hydrocolloid to swell and medicament to be released and to adhere to and be retained at the desired site of action.
Specification