Don't quote me on this but I believe all of GNCs proteins are made by Optimum to begin with. Casein would be great before bed. It is a slow release protein and should help aid recovery without compromising your gains. Also, if you mix you're casein with some whey during the day, it would make a decent snack during the day in between meals. If you have a blender toss some peanut butter and oats in there too.

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