What is the recommended dose of Fibercon (polycarbophil) for patients post colonoscopy?

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Last updated: July 2, 2025View editorial policy

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From the Research

The recommended dose of FiberCon (polycarbophil) for patients post colonoscopy is typically 1 to 2 tablets (500 mg to 1000 mg) taken up to 4 times daily as needed, as supported by the most recent and highest quality study available 1.

Key Considerations

  • Patients should start with a lower dose and gradually increase as tolerated.
  • Each tablet contains 500 mg of calcium polycarbophil.
  • The medication should be taken with a full glass of water (8 ounces) to ensure proper dissolution and effectiveness.
  • Post-colonoscopy, patients may experience temporary bowel irregularity, and FiberCon helps by absorbing water in the intestines to form a soft, bulky stool that is easier to pass.
  • This bulk-forming laxative works gradually and gently, usually producing effects within 12-72 hours.

Important Reminders

  • Patients should maintain adequate fluid intake throughout the day while taking this medication to prevent constipation or intestinal blockage.
  • If symptoms persist beyond a week or worsen, patients should consult their healthcare provider as this may indicate a more serious condition requiring different treatment.

Evidence Summary

The most recent study 1 from 2022, published in The American Journal of Clinical Nutrition, provides evidence on the effectiveness of fiber supplementation for chronic constipation, which can be applied to post-colonoscopy bowel irregularity. Although the study does not specifically address FiberCon dosing, it supports the use of fiber supplements like psyllium and pectin, with doses greater than 10g/d and treatment durations of at least 4 weeks, for optimal results. However, for post-colonoscopy patients, a more conservative approach with FiberCon is recommended, starting with lower doses and adjusting as needed. Other studies 2, 3, 4, 5 focus on bowel preparation for colonoscopy and do not directly address post-colonoscopy FiberCon dosing, making 1 the most relevant and highest quality study for this specific question.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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