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Bulk-forming Laxative·Gastrointestinal - Laxatives
Simple chronic constipation, improving stool consistency in IBS, hemorrhoids
Max Dose
30 g/day
Onset
2-3 Days
Water Req.
MANDATORY
Opioids
INEFFECTIVE
Overview
Plant-derived soluble fiber (Metamucil). Absorbs water in the gut to create a bulky, soft stool, which stretches the colon wall and stimulates natural peristalsis.
Maximum Dose
Max 30 g/day (e.g., 2 teaspoons TDS).
Clinical Focus
Must be consumed with a massive glass of water. If taken without water, it forms a solid concrete plug and causes a catastrophic bowel obstruction.
Bottom Line
Psyllium is a natural bulk-forming fibre laxative for constipation and IBS, but must be taken with adequate water to avoid bowel obstruction and takes 2-3 days for effect.
Brand Names
Metamucil, Mucilax
Oral Routes
Powder (flavoured or smooth texture). Capsules (require massive water intake).
Prescribing & PBS
Over The Counter (OTC).
Primary
Simple chronic constipation, improving stool consistency in IBS, hemorrhoids.
Clinical Place
First-line baseline dietary supplement for healthy patients. Useless for opioid-induced or severe hospital constipation.