# Efficacy, Tolerance and Safety of Split Dose Bowel Preparation for Colonoscopy: 4L Polyethylene Glycol (PEG) Versus 1L Polyethylene Glycol Plus Sodium Picosulfate-magnesium Citrate (SPMC)

> **NCT04474002** · PHASE4 · COMPLETED · sponsor: **Queen Elizabeth Hospital, Hong Kong** · enrollment: 158 (actual)

## Conditions studied

- Bowel Preparation Solutions
- Colonoscopy

## Interventions

- **DRUG:** 4L Klean Prep®
- **DRUG:** 1L Klean prep® and 2 sachets Picoprep®

## Key facts

- **NCT ID:** NCT04474002
- **Lead sponsor:** Queen Elizabeth Hospital, Hong Kong
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2020-12-07
- **Primary completion:** 2022-12-31
- **Final completion:** 2022-12-31
- **Target enrollment:** 158 (ACTUAL)
- **Last updated:** 2025-08-26


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04474002

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04474002, "Efficacy, Tolerance and Safety of Split Dose Bowel Preparation for Colonoscopy: 4L Polyethylene Glycol (PEG) Versus 1L Polyethylene Glycol Plus Sodium Picosulfate-magnesium Citrate (SPMC)". Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/clinical/NCT04474002. Licensed CC0.

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