There are many meal replacement shakes on the market. Here are some of the big names:
Boost Original-Chocolate has 26 essential vitamins and minerals and 10g of Protein. See also Boost 100 calories and Boost Plus.
My personal favorite: President’s Choice Ultra-Shake (lactose-free) with 15g of Protein. Their strawberry flavor tastes quite good.
Ensure Original has 9g of Protein and 26 vitamins and minerals. See also Ensure Light (70 calories, 12g of Protein, 23 vitamins and minerals).