The typical difference between a protein supplement and a meal replacement is that the meal replacement includes vitamins and minerals.

So if you already use a good vitamin and mineral supplement, you don't need the meal replacement, and in fact it could be harmful for this reason:

More and more research is showing that too much of some vitamins is bad.

So a protein supplement, particularly those which don't include vitamins, give you more control over your vitamin intake, and they don't charge you for vitamins you don't need or want.

Jerome
UNJURY (R) Protein