We've heard varying experiences from people with mild lactose intolerance. Some are perfectly fine with Queal, others do experience mild symptoms.
There is 4% lactose in our whey protein. This means that there is about 1% of lactose in your average Queal meal. Which translates to about 1.77grams per meal.
I hope this helps and gives you a reference to other things you might have eaten that contain a little bit of lactose.