Oral care compositions comprising:(a) a peroxide complex comprising a peroxide component and an N－vinyl heterocyclic polymer (e.g., poly－N－vinyl polylactam, or poly－N－vinyl－polyimide)；(b) a whitening agent (e.g., hydrogen peroxide)；and (c) an orally acceptable carrier.In one embodiment, the carrier comprises a film forming material. Methods are also provided for making an oral care composition comprising:(a) mixing a whitening agent, silicone adhesive and carrier fluid to form a homogenous mixture；(b) adding a peroxide complex to said homogenous mixture, wherein said complex comprises hydrogen peroxide and an N－vinyl heterocyclic polymer；and (c) mixing under vacuum.本發明係有關於口護理組成物，其包括：(a)一種過氧化物錯合物，其包括一種過氧化物組份與一種N－乙烯基雜環聚合物(如：聚－N－乙烯基聚內醯胺、或聚－N－乙烯基聚醯亞胺)；(b)一種增白劑(如：過氧化氫)；與(c)一種口可接受之載體。於一實例中，此載體包括一種膜生成之物料。本發明亦提供用於製備一種口護理組成物之方法，其包括：(a)混合一種增白劑、矽酮黏合劑、與載體流體，使生成一種均質混合物；(b)添加一種過氧化物錯合物至該均質混合物，其中該錯合物包括過氧化氫與一種N－乙烯基雜環聚合物；與(c)於真空下混合。
