Copovidone is used as a binder, hardener, a film-former, and as part of a proprietary blend used in controlled-release formulations of tablets and other products. In tableting, copovidone can be used as a binder for direct compression of tablets, increasing their hardness and as a binder in wet granulation of tablets. Copovidone is often added to coating solutions as a film-forming agent. It provides good adhesion, elasticity, and hardness, and can be used as a moisture barrier.