Valproate use by women and girls

Information about the risks of taking valproate medicines during pregnancy.


Valproate (Epilim, Depakote and other generic brands) is associated with a significant risk of birth defects and developmental disorders in children born to women who take valproate during pregnancy.

Valproate is a treatment for epilepsy and bipolar disorder and is prescribed to thousands of women. Since its introduction in 1974, the product information for doctors has included a warning about the possible risk of birth defects. As the risks to unborn children have been increasingly understood, the warnings have been strengthened.

In March 2018 the CMDh endorsed a strengthened regulatory position on valproate medicines. Valproate must no longer be used in any woman or girl able to have children unless she has a pregnancy prevention programme in place. This is designed to make sure patients are fully aware of the risks and the need to avoid becoming pregnant.

It is important women don’t stop taking valproate without first discussing it with their doctor.

If valproate is taken during pregnancy, up to 4 in 10 babies are at risk of developmental disorders, and approximately 1 in 10 are at risk of birth defects.

In women who take valproate while pregnant, around 1 in 10 babies will have a birth defect.

Birth defects seen when mothers take valproate during pregnancy include:

  • spina bifida (where the bones of the spine do not develop properly)
  • facial and skull malformations (including cleft lip and palate, where the upper lip or facial bones are split)
  • malformations of the limbs, heart, kidney, urinary tract and sexual organs.

In women who take valproate while pregnant, about 3–4 children in every 10 may have developmental problems. The long-term effects are not known.

The effects on development can include:

  • being late in learning to walk and talk
  • lower intelligence than other children of the same age
  • poor speech and language skills
  • memory problems.

Children exposed to valproate in the womb are more likely to have autism or autistic spectrum disorders. There is also some evidence children may be more likely to be at risk of developing symptoms of attention deficit hyperactivity disorder (ADHD).

Current advice

Valproate must no longer be used in any woman or girl able to have children unless she has a pregnancy prevention programme in place. This is designed to make sure patients are fully aware of the risks and the need to avoid becoming pregnant.

The CMDh has endorsed the strengthened regulatory position on valproate medicines which MHRA has been championing through the Europe-wide review.

These new regulatory measures also include a ban on the use of valproate for migraine or bipolar disorder during pregnancy, and a ban on the use of valproate to treat epilepsy during pregnancy unless there is no other effective treatment available.

Healthcare professionals who seek to prescribe valproate to their female patients must make sure they are enrolled in the PPP. This includes the completion of a signed risk acknowledgement form when their treatment is reviewed by a specialist, at least annually.

These regulatory changes will be further supported in the upcoming months by:

  • smaller pack sizes to encourage monthly prescribing
  • a pictogram/warning image on valproate labelling

All women and girls who are prescribed valproate should contact their GP and arrange to have their treatment reviewed.

No woman or girl should stop taking valproate without first discussing it with their doctor.

These new regulatory measures are being supported across the NHS with other authorities also making changes – such as new GP system computer alerts and amended NICE guidelines – to make sure changes in prescribing behaviour take place promptly.

Working together, across the health sector, these measures will help reduce the number of pregnancies exposed to valproate medicines to an absolute minimum and will make sure all women and girls of childbearing potential are aware of the risks.

Patient Information Leaflets

A statutory patient information leaflet should always be provided with a medicine containing valproate, even if dispensed in a pharmacy box.

Additional copies of the patient information leaflet of valproate-containing medicines are available to download.


View the Patient card (PDF, 103KB, 2 pages)

View the Patient booklet (PDF, 387KB, 12 pages)

View the Booklet for healthcare professionals (PDF, 247KB, 16 pages)

View the Valproate annual risk acknowledgement form (MS Word Document, 610KB)

View the MHRA press release.

View the Drug Safety Update.

Video to support healthcare professionals

The below video is to help healthcare professionals in implementing the new 2018 regulatory measures, including the pregnancy prevention programme and regular patient reviews.

Valproate – pregnancy prevention programme

Patient support networks

If you have questions or concerns about the risks associated with valproate and pregnancy, please speak to your doctor, pharmacist or other healthcare professional.

You can also contact a patient support network such as:

Bipolar UK - 0333 323 3880

Epilepsy Action - 0808 800 5050

Epilepsy Society - 01494 601 400

Mind - 0300 123 3393

If you are taking valproate and think you might be pregnant or know you are pregnant, contact your doctor at once so that you can talk through your options.

If you have experienced any side effects to this medicine you can report these to MHRA using the Yellow Card Scheme.

If you or your child has been affected by valproate medicines, you can also contact a support network such as:

OACS - 07904 200364

INFACT/FACSA - 01253 799161

Monitoring impact

We have been monitoring trends in the prescribing of sodium valproate to assess the impact of evolving regulatory recommendations and introduction of the pregnancy prevention programme using primary care data from the Clinical Practice Research Datalink GOLD database.

CPRD study monitoring the use of valproate in girls and women in the UK (PDF, 145KB, 4 pages)

We will continue to monitor these and other data sources, including clinical audits and patient surveys, and will take action as necessary to protect public health.

Published 23 March 2018
Last updated 18 December 2018 + show all updates
  1. Added analysis of primary care prescribing data.
  2. Provided new link to Patient Information Leaflets
  3. Added a new video for healthcare professionals covering use of valproate by women and girls.
  4. Added the patient card, patient booklet, and booklet for healthcare professionals
  5. Updated with information about the strengthened regulatory position on valproate.
  6. First published.