This recipe, for Pineapple Lemonade, is naturally gluten free since the key ingredients, such as lemonade, pineapple juice and Sprite/lemon-lime soda do not have any gluten. Nevertheless, it's always an idea to carefully read the labels of any made mixes or ingredients you purchase to make sure they haven't come into contact with gluten-containing products during processing or contain any hidden gluten additives. Savor your revitalizing beverage, with peace of mind!