Bulk-forming Laxatives



Psyllium and methylcellulose are two common bulk-forming laxatives. These laxatives work by absorbing water, which softens stool and increases stool bulk. This increased stool bulk stimulates more frequent bowel movements. Too much bulk-forming laxative can result in diarrhea.

Key Points

  • Psyllium, Methylcellulose
    • Mechanism
      • Soluble fiber
        • Promotes peristalsis
    • Clinical Use
      • Laxative for constipation
    • Adverse Effects
      • Diarrhea