Killersheep has the best idea of making an adjustment to your diet but if you are like me I am never able to scheduale meals at the same time or able to prepare things they way I would like due to time here are a few suggestions I have seen work pretty well in the past...

By the way in a pinch a protien bar works as well...

VPX redline is a pretty good product and fairly priced ( pre made not powder)

Carb solutions is another decent priced one that taste good ( powder)

4 Ever fit is probably the cheapest and best priced and is a fairly good product at about 25$ for 2lb (powder)

also egg whites are great...If you have trouble getting them down a little trick i used to use is..put the egg whites in a blender add a cap full of Vinilla extract and while blending add a teaspoon of sugar..makes it into a shake type thing just drink fast before they start to collect back together or it is slimy egg again