Whey Protein isolate supplement has emerged as an ideal option for those who are not interested in any fat or carbohydrates in their protein shake. Bodybuilders who have some digestion issues are lactose intolerant, or even have bloating issues, can choose whey protein isolate as their post-workout formula. This is because the micro-filtration process in the whey protein isolate helps in the elimination of enough lactose that it does not become an issue.