If you're looking for a safe gluten-free whey protein to drink try EAS. They are one of the very few products on the market that are completely gluten-free. I have personally checked this out for a client who has celiac disease.
Another safe protein - a gainer style protein shake that is completely gluten free is Ultimate Nutrition's Muscle Juice. All flavours are safe for celiac patients and people whom prefer a gluten-free healthy lifestyle.
All the best,
Elaine and Peter
You can also add bioplex to that list.