CHEWABLE LOZENGE FORMULATION- A REVIEW

Abstract

Development of lozenges dated back to 20^thcentury and is still remain popular among the consumer and hence it has continued commercial production. Lozenges are palatable solid unit dosage form administrated in the oral cavity. They meant to be dissolved in mouth or pharynx for its local or systemic effect. Lozenge tablets provide several advantages as pharmaceutical formulations however with some disadvantages. Lozenge as a dosage form can be adopted for drug delivery across buccal route, labial route, gingival route and sublingual route. Multiple drugs can also be incorporated in them for chronic illness treatments. Lozenge enables loading of wide range of active ingredients for oral systemic delivery of drugs. Lozenges are available as over the counter medications in the form of caramel based soft lozenges, hard candy lozenges and compressed tablet lozenges containing drugs for sore throat, mouth infection and as mouth fresheners. The rationale behind the use of medicated lozenges as one of the most favored dosage form for the delivery of antitussive drugs. This review focuses various aspects of lozenge formulation providing an insight to the formulation scientist on novel application of lozenge drug delivery system.