Intestinal Preparation in Colonoscopy: Lactulose vs Sodium Phosphate.

To compare intestinal preparation with Lactulose vs. Sodium Phosphate as the better agent for performing high-quality colonoscopies at the Civil Hospital Fray Antonio Alcalde and the Civil Hospital Juan I. Menchaca, both in Guadalajara, Mexico; as well as Hospital Santo Tomás in Panama City, Panama; and Hospital Gustavo Nelson Collado Ríos in Chitré, Panama; during the period from April 1, 2025, to November 30, 2025. The comparison will focus on colonoscopy quality, patient tolerance, satisfaction, and electrolyte changes, using the agents orally as part of the bowel preparation prior to the colonoscopy procedure.