Development of an easily swallowed film formulation

Area of Science:

• Pharmaceutical Sciences
• Drug Delivery Systems
• Biomaterials

Background:

• Swallowing difficulties (dysphagia) are common, especially in elderly populations, leading to challenges with oral medication adherence.
• Traditional oral dosage forms like capsules can sometimes cause esophageal transit issues, increasing the risk of local irritation or retention.
• Developing patient-friendly dosage forms that ensure safe and effective drug delivery is a significant challenge in pharmaceutical development.

Purpose of the Study:

• To develop and characterize an easily swallowed film formulation with rapid in-situ gelation properties.
• To evaluate the drug release profile and esophageal transit of the novel film formulation.
• To compare the safety and efficacy of the film formulation against conventional gelatin capsules in a clinical setting.

Main Methods:

• Fabrication of a multi-layered film formulation with gelating layers and a drug-containing core.
• Swelling studies using purified water to assess gelation kinetics and mechanical properties (bulk modulus).
• Dissolution studies using glimepiride as a model drug to evaluate drug release.
• Clinical study involving human participants to assess esophageal transit and safety compared to gelatin capsules.

Main Results:

• The film formulation demonstrated instantaneous gelation upon contact with saliva or purified water.
• The gelated film exhibited a low bulk modulus (<500 N/m2) within 15 seconds, indicating suitability for easy swallowing.
• Dissolution studies showed delayed release of glimepiride from the film formulation.
• Clinical evaluation revealed significantly faster esophageal transit and no observed stagnation for the film formulation, unlike gelatin capsules.

Conclusions:

• The developed film formulation offers an easily swallowed and safe alternative for oral drug delivery, particularly for patients with swallowing difficulties.
• The formulation's rapid gelation and delayed drug release characteristics are advantageous for oral administration.
• The improved esophageal transit profile highlights the potential of this film formulation to enhance patient compliance and reduce risks associated with oral medications.