clobetasone butyrate + polyvinylpyrrolidone

Clobetasone butyrate + polyvinylpyrrolidone is a combination drug formulation used primarily in ophthalmology for the treatment of dry eye, particularly in patients with Sjögren syndrome. Clobetasone butyrate is a moderately potent topical corticosteroid with anti-inflammatory properties, acting by suppressing inflammatory mediators and reducing immune cell activation. Polyvinylpyrrolidone serves as an ocular lubricant and tear substitute, improving the stability of the tear film and providing symptomatic relief from dryness. Clinical studies have shown that this combination can significantly improve symptoms, reduce corneal and conjunctival staining, and decrease markers of ocular surface inflammation without significant adverse effects on intraocular pressure or fundus examination[3][4]. The primary mechanism involves local immunosuppression (from clobetasone) combined with lubrication (from polyvinylpyrrolidone).