Polymers are essential pharmaceutical excipients that help overcome formulation challenges and enable controlled or site-specific drug delivery. Among them, ethylcellulose a water-insoluble cellulose derivative is widely used because it can act as a coating agent, binder, filler, film-former, drug carrier, stabilizer, and flavoring fixative.
Ethylcellulose is particularly valuable for modifying drug release, masking unpleasant tastes, improving tablet properties, and developing sustained-release systems. Its hydrophobic, biocompatible, and gastroresistant nature makes it useful in both oral formulations, such as coated tablets and microparticles, and topical products, including films, patches, gels, and nail lacquers.