A variety of ingredients are used in Ensure shakes to support one’s nutrition needs. These nutrients are all safe for humans and have been used in various other foods. For example, milk protein concentrate, whey protein concentrate, and/or soy protein isolate are used to provide high quality protein; canola oil provides healthy fats; vitamins and minerals are included in Ensure drinks as w Infant Formula. Currently all ready-to-drink (liquid) infant formula, except Gerber Good Start, contains carrageenan. Avoid carrageenan in infant formula by buying organic powdered formula. Meat. Butterball (chicken breast strips) Hormel (Natural Choice carved chicken breast) Oscar Meyer (Deli-Fresh) Dec 12, 2020 · Where dairy is an allergy, there is protein-based formula, which is probably the closest to human milk, but is the most expensive. Where dairy is an allergy, soy is probably also an allergy and should be a last resort.