Lactose and Milk Free Protein Powders Good News! There are plenty of lactose free protein powders available, and there are many that do not contain milk ingredients either. Most of the high-quality protein powders on the market these days come from milk. Whey and Casein protein are the most popular proteins supplements and are derived from milk and therefore contain milk sugars, commonly called lactose. I have also listed some milk free protein powders at the end of the article.…