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Sodium Valproate & Topiramate Monitoring Statistics to June 2026

21 August 2026

The following report – Sodium Valproate & Topiramate Monitoring Statistics to June 2026 has been published as part of the General Pharmaceutical Services and Prescribing Statistics for Northern Ireland publication schedule.  This report, produced in accordance with the Code of Practice for Statistics, contributes to the monitoring of the effectiveness of actions to ensure safe and appropriate use of prescribed Sodium Valproate and Topiramate in Northern Ireland.

This quarterly series combines the previously separate reports of Sodium Valproate and Topiramate monitoring into a singular release, with two sets of tables and a single interactive dashboard and can be accessed on the BSO website by clicking on the following link: Sodium Valproate & Topiramate Monitoring – Business Services Organisation (BSO) Website

The Sodium Valproate and Topiramate Monitoring Dashboard presents the figures of the five indicators contained within the published tables in interactive visuals. This interactive dashboard allows users to easily select between medicine of interest and numerous variables in order to focus on specific areas of interest, such as age group, gender or area in each of the five indicators.

To view the full report: Sodium Valproate & Topiramate Monitoring – Business Services Organisation (BSO) Website

A key facts summary of the main findings of each report is below.

Infographic from the Sodium Valproate and Topiramate Monitoring Report to June 2026. Between January and June 2026, 731 females and 2,305 males aged 0 to 54 were prescribed and dispensed Sodium Valproate. Compared with April 2019, the number of female patients decreased by 54% and male patients decreased by 30%. During the same period, 845 females and 405 males aged 0 to 54 were prescribed and dispensed Topiramate. Compared with April 2019, female patients decreased by 29% and male patients decreased by 9%. Between April and June 2026, 14 females and 24 males under 55 started Sodium Valproate, while 54 females and 31 males under 55 started Topiramate.

Infographic from the Sodium Valproate and Topiramate Monitoring Report to June 2026. The rate per 1,000 population of verifiable patients under 55 prescribed Sodium Valproate was 1.05 for females and 3.12 for males. The equivalent rate for patients aged 0 to 54 prescribed Topiramate was 1.21 for females and 0.55 for males. A table shows the proportion of female patients aged 13 to 44 as a percentage of all patients by HSC Trust. For Sodium Valproate the proportions were Belfast 4.0%, Northern 6.1%, South Eastern 5.3%, Southern 5.2%, and Western 4.5%. For Topiramate the proportions were Belfast 21.5%, Northern 22.5%, South Eastern 19.9%, Southern 20.6%, and Western 15.9%.