Mathematical model for enteric film coating of tablets

Area of Science:

• Pharmaceutical Technology
• Materials Science

Background:

• Enteric coatings protect medications from stomach acid.
• Methacrylic acid-methyl methacrylate copolymer is a common enteric film-former.

Purpose of the Study:

• To investigate the impact of formulation and process variables on enteric coating performance.
• To optimize enteric coating disintegration and gastric resistance using statistical analysis.

Main Methods:

• Utilized statistical techniques, including regression analysis and the steepest descent method.
• Employed a statistically designed set of experiments to gather data.
• Evaluated coated placebo tablets in simulated gastric and intestinal fluids.

Main Results:

• Developed two first-order polynomial equations to model coating behavior.
• Identified key variables influencing disintegration time in simulated intestinal fluid.
• Determined optimal variable combinations for desired coating performance.

Conclusions:

• Statistical modeling provides an effective approach for enteric coating optimization.
• Formulation and process variables significantly impact enteric coating functionality.
• The study offers a data-driven method for achieving targeted enteric coating properties.