sodium phosphate dibasic anhydrous + sodium phosphate monobasic

Sodium phosphate dibasic anhydrous + sodium phosphate monobasic is an **oral small-molecule osmotic laxative combination** used primarily for **cleansing of the colon before colonoscopy in adults**. The product is marketed under brand names including **OsmoPrep** and **Visicol**. Its laxative effect is mediated by the **osmotic activity of phosphate salts in the intestinal lumen**, which draws water into the bowel, promotes catharsis, and facilitates bowel evacuation rather than acting through a discrete receptor or enzyme target. This combination has been developed and marketed for bowel preparation, while related sodium phosphate formulations administered by injection are used separately as phosphorus replacement products for hypophosphatemia and should not be conflated with the oral tablet bowel-prep product.

Brand names

OsmoPrepVisicol

Other names

monobasic sodium phosphate and dibasic sodium phosphate tabletssodium phosphate monobasic + sodium phosphate dibasic anhydroussodium phosphates tablets