This article examines the impact of diverging regulations and practices for food supplements and specialized food products since the UK left the EU market in 2020.   Keywords – Brexit, divergence, food supplements, UK, Northern Ireland   Background and introduction On 23 June 2016, the UK, comprising England, Northern Ireland, Scotland, and Wales, held a referendum on whether the UK should remain in the EU or leave. Based on an overall majority of 51.9% on ...