No More Sucralose!! (Splenda)
I use two different ones that you might find helpful:
The first is Beneprotein (from the makes of Benefiber). I purchased it online at Walgreens.com as they usually don't carry it in the store. It is unflavored with nothing in it. I mix it into smoothies, shakes, pudding, baked things for my DH and DS's (they don't even know the difference!) It is made for feeding tubes and people who struggle with mouth or throat issues, so it mixes easily and doesn't clump at all. It is a great product.
The other I use is Nature's Way Metabolic Reset in Chocolate. This has 21 grams of protein in two scoops but nothing else. I purchases this at Whole Foods.
If neither of these strike your fancy, check our your local Whole Foods (if you have one) or online as they have many different kinds of unflavores, "unsugared" protein powders.
Anjanette