Ensure Liquid is a complete and balanced, ready-to-drink supplement that is indicated for people recovering from illness or surgery, those experiencing involuntary weight loss, those on modified or low residue diets and also for healthy and active adults. It is an excellent source of 24 essential vitamins and minerals. It contains Zinc, Vitamins C and E to help maintain a strong immune system, plus calcium, magnesium and Vitamin D to help maintain healthy bones and teeth.