Sterculia
Brand names: Normacol
Sterculia is a bulk-forming laxative used to treat constipation and to regulate stool consistency, including in patients with irritable bowel syndrome or a stoma.
Adult dose
Paediatric dose
Dose adjustments
No renal dose adjustment is printed in the retrieved SPC sections (§4.2-§4.4).
No hepatic dose adjustment is printed in the retrieved SPC sections (§4.2-§4.4).
Dose independently re-sourced from UK Summary of Product Characteristics (SPC) via MHRA Products — clinician-reviewed. Always confirm against the product SmPC and your local formulary before prescribing.
Contraindications
- Intestinal obstruction, faecal impaction, and total atony of the colon (§4.3)
- Known hypersensitivity to the active substances or to any of the excipients listed in section 6.1 (§4.3)
Side effects
- Allergic reactions (§4.8)
- Oesophageal obstruction; intestinal/colonic obstruction or impaction (§4.8)
- Abdominal distension, flatulence, diarrhoea, nausea, abdominal pain (§4.8)
- Possible fluid and electrolyte depletion in association with diarrhoea (§4.4)
Interactions
- None known (§4.5)
Monitoring
- No monitoring schedule is printed in the SPC. §4.4: caution in ulcerative colitis; maintain adequate fluid intake; if there has been no movement of the bowels, do not take for more than 4 days; avoid taking immediately before going to bed or in a recumbent position, especially in the elderly
Clinical monograph
How it works
Being an indigestible plant gum, it absorbs water in the gut to increase faecal mass, which stimulates peristalsis and softens the stool.
Prescribing in practice
- It must be taken with plenty of fluid and is contraindicated in intestinal obstruction, faecal impaction, and reduced gut motility because of the risk of bowel or oesophageal obstruction.
- It should not be taken immediately before going to bed, to reduce the risk of oesophageal blockage.
- Full effect may take a few days to develop, so dosing should not be escalated prematurely.
Monitoring
No laboratory monitoring is required; assess bowel-habit response and ensure adequate fluid intake.
Counselling the patient
- Take each dose with a full glass of water and maintain a good fluid intake through the day.
- Do not take it just before lying down or going to bed.
Evidence & guidelines
Bulk-forming laxatives such as sterculia are recommended by NICE as first-line treatment for constipation with inadequate dietary fibre.
Reference: NICE CG99; Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. The structured dose values shown have been reviewed by a clinician. Monograph status: clinician-reviewed (2026-07-04).
Related
Curated clinical cross-links plus same-class fallbacks.
- Lower Gastrointestinal Bleed · BSG 2019; NICE NG141
- Variceal Upper GI Bleed · BSG 2015; Baveno VII (2022)
- Spontaneous Bacterial Peritonitis (SBP) · BSG / EASL 2018
- Hepatorenal Syndrome · EASL 2018; ICA 2015
- Hepatic Encephalopathy · EASL 2014; West Haven criteria
- Clostridioides difficile Colitis · NICE NG199 (2021); IDSA/SHEA 2021