This easy to prepare vanilla flavour Shake is one of fifteen satisfying products in the Optifast VLCD range. It is part of a nutritionally complete Program, is high in protein, is a source of calcium and tastes delicious.The Optifast VLCD Vanilla Shake can be enjoyed for breakfast, lunch or dinner on the Optifast VLCD Program. It's high in protein, so you feel full for longer, as well as being low in calories.