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Constipation
Constipation can come from some chemo drugs, anti-nausea and pain medicines, eating less and moving less.
When it happens
It often happens in the days after treatment.
What helps at home
- Drink plenty of fluids.
- Add fiber slowly if your team says it's OK.
- Walk or move every day if you can.
- Ask your team which stool softeners or laxatives are safe for you.
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Call your care team now if you have:
- No bowel movement for a few days, or longer than your team told you to wait
- Belly pain, bloating or vomiting
- Blood in your stool
Call 911 for trouble breathing, chest pain or signs of stroke.
Drugs on this site linked to constipation
Find support
- CancerCare: Free counseling, support groups and financial help
- Cancer Support Community: Support groups, a helpline and the MyLifeLine online community
- Imerman Angels: Free one-on-one matching with a survivor or caregiver mentor
- American Cancer Society: 24/7 helpline (1-800-227-2345), rides to treatment, lodging and information
Common questions
Is constipation from chemo normal?
It's common, especially with anti-nausea and pain medicines. Your team can help prevent it.
Written by the Cancer Side Effects Guide team from FDA labels and leading cancer centers. Not medical advice. · Last updated: October 15, 2026 · How we write
Not medical advice. This page is general information to help you talk with your care team. It can't replace advice from your doctor or nurse. If you have a fever of 100.4°F (38°C) or higher during treatment, or any symptom that worries you, call your care team now. In an emergency, call 911.