Safety and efficacy of two reduced dosing regimens of sodium phosphate tablets for preparation prior to colonoscopy

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Abstract
Objectives: To evaluate the safety and efficacy of two reduced dosing regimens of sodium phosphate tablets (Visicol, InKine Pharmaceutical Co. Inc., Blue Bell, PA, USA) for colon cleansing prior to colonoscopy. Methods: In a randomized, multicentre, endoscopist‐blinded clinical study, adults undergoing colonoscopy received either 28 tablets (42 g) or 32 tablets (48 g) of sodium phosphate for colon cleansing. The endoscopist used a validated four‐point scale to rate the overall quality of colon cleansing, as well as cleansing in the ascending colon. Adverse events were collected and evaluated. Results: The quality of overall colon cleansing was `excellent' or `good' in 84% or more of both groups, with no significant difference between the two doses. No patient had a preparation rated as `inadequate' or required a repeat procedure. All patients were able to complete the assigned dose of tablets, and there were no deaths, serious adverse events or dropouts from the study. Conclusions: A reduced tablet regimen for sodium phosphate tablets, using either 28 or 32 tablets, is well tolerated and effective for colon cleansing prior to colonoscopy.