Can I take ispaghula husk (Fybogel) while pregnant or breastfeeding?
A plain-words look at what the NHS, the US drug label and LactMed say about ispaghula husk (Fybogel).
In short
Pregnancy: Fybogel is often taken in pregnancy, and it does not harm your baby.
Breastfeeding: Fybogel can be taken while you're breastfeeding.
Your doctor, midwife or pharmacist can help you decide.
What this means for you
Breastfeeding
- It does not get into breast milk, so it has not caused side effects in breastfed babies.
- Make sure you drink plenty of fluids while taking Fybogel.
- This will also help your breast milk supply.
Talk to your doctor or pharmacist
This page is educational, not advice for your own situation. Talk to your doctor, midwife or pharmacist before you start, stop or change any medicine in pregnancy or while breastfeeding.
The details: what each source says
Ispaghula husk (Fybogel) in pregnancy
The NHS says
Fybogel is often taken in pregnancy, and it does not harm your baby.
In our words, from the NHS page Fybogel (ispaghula husk) (nhs.uk). Contains public sector information licensed under the Open Government Licence v3.0 (OGL v3.0). The NHS does not endorse this site.
The US Drug Facts label says
If pregnant or breast-feeding, ask a health professional before use.
Drug Facts label: Metamucil Therapy for regularity (oral), Atlantic Biologicals Corp. Label on DailyMed. Quoted verbatim; US labels are written for US prescribers and patients.
Ispaghula husk (Fybogel) while breastfeeding
The NHS says
Fybogel can be taken while you're breastfeeding.
It does not get into breast milk, so it has not caused side effects in breastfed babies.
Make sure you drink plenty of fluids while taking Fybogel. This will also help your breast milk supply.
In our words, from the NHS page Fybogel (ispaghula husk) (nhs.uk). Contains public sector information licensed under the Open Government Licence v3.0 (OGL v3.0). The NHS does not endorse this site.
LactMed says
Few data are available on psyllium use during breastfeeding. However, the drug is not absorbed from the gastrointestinal tract, so it cannot enter the breastmilk. Psyllium is acceptable to use during breastfeeding.[1,2]
“Summary of Use during Lactation”, LactMed record “Psyllium” (LM471), quoted verbatim. Everything LactMed reports about Psyllium while breastfeeding.
Other names
UK brand names (per the NHS): Fybogel, Ispagel.
US name: psyllium.
Sources
- NHS, Fybogel (ispaghula husk) (nhs.uk), page last reviewed 13 January 2026. Paraphrased. Contains public sector information licensed under the Open Government Licence v3.0.
- US drug label: Metamucil Therapy for regularity (oral), Atlantic Biologicals Corp., human otc drug, label effective 5 August 2026, set ID 57b112ea-f6b1-baa6-e063-6394a90a3b29. DailyMed (National Library of Medicine). Public domain; quoted verbatim.
- Drugs and Lactation Database (LactMed), National Institute of Child Health and Human Development (NICHD), via NCBI Bookshelf, record “Psyllium” (LM471), bulk release of 22 September 2026. LactMed on NCBI Bookshelf. Public domain; quoted verbatim. LactMed is a registered trademark of the U.S. Department of Health and Human Services.
Sources checked 26 September 2026. How we source and check every page.
Educational summary of named sources, not medical advice.