What is the effect of Benefiber (psyllium), a bulk-forming laxative?

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From the Guidelines

Benefiber is a soluble fiber supplement that can help improve digestive health by adding bulk to stool and promoting regular bowel movements, although its effectiveness is not as well-established as other fiber supplements like psyllium, according to the most recent guidelines 1. When considering the use of Benefiber, it's essential to note that the American Gastroenterological Association recommends the use of fiber supplementation, particularly psyllium, as a first-line therapy for chronic idiopathic constipation (CIC) 1. The guidelines suggest that fiber supplements can be used to increase total fiber intake from diet and supplements, and that adequate hydration should be encouraged with the use of fiber. Some key points to consider when using Benefiber include:

  • Starting with a low dose and gradually increasing fiber intake to minimize side effects like bloating and gas
  • Drinking plenty of water when taking fiber supplements to help soften stool and ease bowel movements
  • Maintaining consistent daily use for optimal digestive health benefits
  • Being aware that Benefiber may not be as effective as other fiber supplements like psyllium, which has been shown to be effective in improving stool viscosity and transit time 1. It's also important to note that the use of fiber supplements like Benefiber should be individualized, and patients should be advised to consult with their healthcare provider before starting any new supplement regimen, especially if they have underlying medical conditions or are taking other medications 1.

From the Research

What is Benefiber

  • Benefiber is a fiber supplement that can help with constipation, as it is a type of bulk-forming laxative 2, 3.
  • It works by absorbing liquid in the intestines and swelling to form a softer, bulkier stool, which is easier to pass 3.
  • The use of fiber supplements like Benefiber is generally recommended as a first-line approach for treating constipation, although the clinical evidence supporting their use varies widely 2.
  • Some studies suggest that psyllium, a type of fiber, may be beneficial for patients with constipation, and Benefiber contains wheat dextrin, a type of soluble fiber 4.

Efficacy and Safety

  • There is moderate evidence to support the use of fiber supplements like Benefiber for treating constipation, although the quality of evidence can be improved with more rigorously designed studies 4.
  • Common adverse events associated with fiber supplements include diarrhea, nausea, bloating, and abdominal pain, but no serious adverse events have been reported 4.
  • Benefiber is generally considered safe and well-tolerated, but it is essential to follow the recommended dosage and consult a healthcare professional if symptoms persist or worsen 5.

Comparison with Other Treatments

  • Osmotic laxatives like polyethylene glycol and stimulant laxatives like senna have good evidence to support their use as first-line treatments for constipation 4.
  • Fiber supplements like Benefiber may be used as an adjunct therapy or for patients who do not respond to other treatments 3, 5.
  • The choice of treatment for constipation depends on individual patient needs and medical history, and healthcare professionals should be consulted for personalized recommendations 2, 3, 4, 5.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Review of the treatment options for chronic constipation.

MedGenMed : Medscape general medicine, 2007

Research

Medical treatment of constipation.

Clinics in colon and rectal surgery, 2005

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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