Think of kefir as a drinkable yogurt. It's full of live and active cultures to stimulate digestion. Lifeway Foods specializes in the drinkable food and has several options for children and adults. The kid on the go will enjoy Probugs. They're in no-spill pouches and are made in flavors such as Goo-Berry Pie, Orangre Cream Crawler, Sublime Slime Lime and Strawnana Split. The Probug push-up is my personal favorite of the products. It's a frozen yogurt so it doesn't taste as tart.
For the adults looking for a healthier alternative with the benefits of aiding in digestion check out the Greek Style FroYo in Chocolate Swirl. It's 110 calories for 1/2 a cup and has 6g of protein per serving. it's gluten free and 99% lactose free, and it's super delicious.
You can find the products at the Super Target in the Tulsa metro or online at http://lifeway.net