Lifeway in the US has released its Probugs Blast children¹s kefir in a 3.5oz bottle, with four flavours: Cherry Lime Supernova, Grape Galaxy, Peach Mango Moon and Strawberry Kiwi Comet. Sold in packs of four, each  drink contains 12 live and active probiotic cultures and is 99% lactose and gluten free.