An examination of Ireland's sugar sweetened beverage tax (sugar tax) in practice.

Background: In the face of rising obesity levels, Ireland introduced a sugar sweetened beverage tax (SSBT) in 2018, the scope of which was extended in 2019. To date, there is a dearth of research on the actual impact of the SSBT on the pricing.

Method: This study involved an examination of the relative cost of leading brand full-sugar and sugar-free carbonated soft drinks in a convenience sample of 14 different Irish supermarkets.