anyone who can multiply should know 3 cans a day is not enough unless you have additional food....get at least 2400 calories....I use jevity 1.5 and mix in fruit, muscle milk, ice cream, honey, and sometimes peanut butter....being you are on tube add some flaxseed oil....I am not on tube and I slurp up my drink through a straw....been doing this type of drink for almost 5 years...also eat two meals a day...SUCCESS