There are many, many whey protein powders on the market. They are available online at Amazon, I-herb, and other supplement vendors. They are also available at drugstores and grocery stores. Some are offered in 1 serving packets so you could see if you like the taste before buying a larger size.

I have tried two kinds: (1) BioChem (manufactured by Country Life) 100% Whey Protein, chocolate flavor. From grass fed cows, free of artificial hormones, no artificial sweeteners. It had 20 grams of protein. It did have organic evaporated cane juice sugar as an ingredient in it. (don't know if that is important to you or not). Mixed fairly easily and taste was okay.

(2) Jay Robb Whey Protein Vanilla. 25 grams of protein. Sweetened with stevia. This mixed fairly easily, but was a little too sweet for my taste.

When I was trying to decide what brands to try, I looked at number of protein grams, that product was either whey isolate or whey concentrate, came from grass fed cows, free from artificial hormones (rBGH), and that it didn't have a lot of sugar or "junk" ingredients in it.

You could try mixing the whey protein with milk, or yogurt and/or fruit for more nourishment. (I just mixed mine in a glass with a spoon and stirred briskly.) If just using cold water and whey powder, liquid will be thin.

Other whey protein brands that I thought looked like they might be good were: NOW Sports whey protein certified organic, Jarrow Whey Protein Powder Natural, Solgar Whey to go, and Whey Factors Natural French Vanilla. However, I have not tried these.

The two kinds I purchased were at two different grocery stores. So those brands may be easier to find at brick-and mortar stores. Hope this helps!