Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 10/10/2025

Management of Constipation in Pregnant Women

Safety and Efficacy of Psyllium Husk

  • The American Gastroenterological Association recommends psyllium husk as a safe first-line treatment option for pregnancy-related constipation due to its lack of systemic absorption 1, 2, 3, 4
  • Psyllium husk is effective in improving stool viscosity and transit time, and increasing bulk, with no reported adverse fetal outcomes 1, 2, 3, 4
  • The American Gastroenterological Association guidelines identify psyllium as a safe treatment option for pregnant women with constipation 1, 2, 3, 4

Clinical Effectiveness of Psyllium Husk

  • Soluble fiber like psyllium improves stool viscosity and transit time, and increases bulk, compared to insoluble fiber 1, 2, 3, 4
  • Psyllium husk increases stool frequency by approximately 2.32 bowel movements per week and improves global symptom relief 5, 6, 7, 8, 9
  • Standard dosing of psyllium husk is 3.6-5 g taken 2-3 times daily with 8-10 ounces of fluid 5, 6, 8

Treatment Algorithm for Constipation in Pregnancy

  • The American Gastroenterological Association recommends increasing dietary fiber to 30 g/day through fruits, vegetables, whole grains, and legumes as the first step in treating constipation in pregnancy 1, 2, 3, 4, 10, 11
  • Psyllium husk should be considered when dietary modifications are ineffective 11
  • Polyethylene glycol (PEG) 17g daily is the preferred next-line agent if psyllium husk is insufficient 10, 11
  • Magnesium hydroxide 400-500 mg daily is safe and effective, but should be used cautiously in renal impairment due to hypermagnesemia risk 10, 11, 12

Special Considerations

  • Approximately 80% of pregnant women develop hemorrhoids, particularly in the third trimester 1, 2, 3, 4
  • Hydrocortisone foam is safe in the third trimester for symptomatic hemorrhoid relief 1, 2, 3, 4, 10, 11
  • Pregnant women should avoid straining during bowel movements by allowing ample time and using relaxation techniques 1, 2, 3, 4

Monitoring Response

  • Reassess bowel movement frequency and consistency after initiating treatment, with a goal of achieving soft, formed stools every 1-2 days 10, 11
  • Adjust treatment based on response, escalating through the algorithm as needed 10, 11

REFERENCES

10

Treatment of Constipation in Pregnancy [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

11

Emergency Management of Constipation During Pregnancy [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025