Long-lasting, flavored dosage forms for sustained release of beneficial agents within the mouth

Abstract

Flavored dosage forms, e.g., lozenges and gums, are provided for sustained release of a flavoring agent in the mouth. The dosage forms provide sustained release by virtue of a wet matrix formed by admixture of a biocompatible, hydrophilic, water-insoluble polymer such as ethylcellulose and a flavoring agent, particularly an essential oil or a constituent thereof, e.g., a terpene or sesquiterpene. The dosage forms may also include a second beneficial agent in addition to the flavoring agent. Exemplary such beneficial agents include ionizable zinc compounds and other cold remedies, local anesthetic and anti-infective agents, diet aids, fluoride-releasing compounds, and nicotine. The dosage forms, when formulated as lozenges, may be somewhat adhesive or substantially nontacky, depending primarily on the molecular weight of the hydrophilic polymer. Adhesive lozenges can serve as dosage forms that adhere to the teeth or gums for delivery of a beneficial agent thereto. Methods for using the dosage forms to provide sustained release of a flavoring agent and optionally deliver a second beneficial agent are also provided, as are methods for treating the common cold, treating a sore throat, facilitating weight loss, and assisting in smoking cessation.