Lactose is a commercial food additive used for its texture, flavor, and adhesive qualities. It can also be listed on food labels as:
Whey
Curds
Casein
Caseinate
Lactoserum
Lactoglobulin
Milk Byproducts
Milk Solids
Modified Milk Ingredients
You will find the lactose ingredients added to foods such as sliced breads, breakfast cereals and bars, baked goods, instant potatoes and soups, lunch meats, sausage, hot dogs, and many other foods. So, read your labels!
Some of you may be able to eat a small quantity of these foods without experiencing any symptoms of lactose intolerance. You will have to go through a trial and error period. Often, the foods can be eaten in moderation if you take one of the lactase enzymes with your food. One that works, and can be easily purchased here is Lactaid.