An Overview on Various Approaches and Recent Patents on Buccal Drug Delivery Systems

Abstract

Background: Buccal delivery is an alluring course of organization for fundamental medication conveyance and it leads direct access to the systemic flow through the interior jugular vein sidesteps drugs from the hepatic first-pass digestion gives high bioavailability. Objective: This article aims at buccal medication conveyance by discussing the structure and condition of the oral mucosa and the novel strategies utilized in evaluating buccal medication ingestion. Methods: This review highlights the various pharmaceutical approaches for buccal delivery such as buccal tablets, buccal lozenges, buccal micro/nanoparticle, wafer and semisolid dosage forms like chewing gums, buccal patch, buccal gel or ointment and some buccal liquid dosage forms like buccal solutions and buccal sprays and recent patents filed or granted for these approaches. Results: Recently, some patents are also reported where a combination of various approaches is being employed to achieve very effective mucosal delivery. The various patent search sites were used to collect and analyze the information on buccal drug delivery systems. Conclusion: The present study provides valuable information, advantages, limitations and future outlook of various buccal drug delivery systems.

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“…The delivery of drugs via the buccal mucosa, for local and/or systemic effect, has acquired an increasing relevance over the last decades, as proved by recent specific reviews [ 73 , 74 ]. The buccal mucosa can offer many advantages compared to the conventional oral administration route.…”

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“…Unlike other oral administration, intraoral drug delivery could be terminated flexibly in case urgently adverse effects occur, suggesting a highly safe treatment 6,7 . When compared to injection, it eliminates the patient's needle phobia by passing through capillaries or in a minimally invasive way through the oral epithelium 8–10 . Not negligibly, it is well protected from gastrointestinal degradation and hepatic first‐pass effect, both of which are crucial for the delivery of macromolecules (e.g., protein, peptide, nucleic acid, and polysaccharide) 9,11,12 .…”

“…6,7 When compared to injection, it eliminates the patient's needle phobia by passing through capillaries or in a minimally invasive way through the oral epithelium. [8][9][10] Not negligibly, it is well protected from gastrointestinal degradation and hepatic first-pass effect, both of which are crucial for the delivery of macromolecules (e.g., protein, peptide, nucleic acid, and polysaccharide). 9,11,12 More importantly, with the help of material optimization and device assistance, the drug release rate could be well regulated to meet various requirements.…”