ABSTRACT
Polymers are widely used in pharmaceutical dosage forms. Water-soluble polymers are used to increase the viscosity of the aqueous solutions, to maintain the stability of suspensions, and coating of tablets. Water-soluble polymers are used as adhesives for use in the buccal mucosa. Water-soluble polymers are also used as suspending and emulsifying agents, –occulating agents, adhesives, packaging and coating materials, and as components of sustained and site-specic drug delivery systems. Watersoluble polymers can also be cross-linked to give hydrogels.
