Can I take gliclazide while pregnant or breastfeeding?

A plain-words look at what the NHS, the US drug label and LactMed say about gliclazide.

In short

Pregnancy: Let your doctor know if you're pregnant or trying for a baby.

Breastfeeding: Let your doctor know if you're breastfeeding.

Your doctor, midwife or pharmacist can help you decide.

What this means for you

Pregnancy

Breastfeeding

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

Gliclazide in pregnancy

The NHS says

Let your doctor know if you're pregnant or trying for a baby.

Gliclazide is not usually used in pregnancy, and your doctor may offer you another medicine while you're pregnant.

In our words, from the NHS page Gliclazide (nhs.uk). Contains public sector information licensed under the Open Government Licence v3.0 (OGL v3.0). The NHS does not endorse this site.

More on gliclazide in pregnancy: Bumps (Best Use of Medicines in Pregnancy) leaflet (external site).

Gliclazide while breastfeeding

The NHS says

Let your doctor know if you're breastfeeding.

Gliclazide is not usually used during breastfeeding, and your doctor may offer you another medicine while you breastfeed.

In our words, from the NHS page Gliclazide (nhs.uk). Contains public sector information licensed under the Open Government Licence v3.0 (OGL v3.0). The NHS does not endorse this site.

Sources

  1. NHS, Gliclazide (nhs.uk), page last reviewed 6 August 2026. Paraphrased. Contains public sector information licensed under the Open Government Licence v3.0.
  2. Bumps (Best Use of Medicines in Pregnancy), UK Teratology Information Service: Bumps (Best Use of Medicines in Pregnancy) leaflet. Linked, not reproduced.

Sources checked 26 September 2026. How we source and check every page.

Educational summary of named sources, not medical advice.