...One of the products that has saved me is a CytoSport item called CytoMax Protein. It comes in ready to drink bottles, has no sugar, fat or carbs. It contains 40 grams of lactose-free whey protein - and it's clear! Another bonus is the flavor, it really is good. There are several flavors, I like the tangerine best. Also, and a real important factor for me - it is sweetened with Splenda, NOT the dreaded mallitol, xylitol or sorbitol, all of which do a horrible number on my GI system.
I bought mine at GNC, I'm sure they sell it elsewhere too.
Good luck!
GHJ