sodium sulfate + potassium sulfate + magnesium sulfate + simethicone

DWC202304 is a fixed-dose combination drug developed by Daewoong Pharmaceutical, marketed under the brand name EasyPrep in South Korea. It is indicated for bowel cleansing in preparation for colonoscopy or other endoscopic and radiological procedures. The formulation contains three osmotic laxatives—sodium sulfate, potassium sulfate, and magnesium sulfate—which work by drawing water into the colon to stimulate bowel movements and clear fecal matter. Additionally, it includes simethicone, an anti-foaming agent that reduces gas bubbles in the gastrointestinal tract, thereby improving the clarity of the endoscopic view. In clinical development, DWC202304 has served as the reference control for newer formulations, such as DWJ1609, which adds sodium picosulfate to the mixture.

Brand names

EasyPrep

Other names

sodium sulfate, potassium sulfate, magnesium sulfate, and simethicone이지프렙