I had to to Optifast for the month and a half preceeding surgery, so you can do 2 weeks!! Optifast was good b/c with the shakes you got everything you need as far as nutrition and it was 800 calories - I lost 24 pounds during this period. Talk toyour doc about it - it was good for me because it was exactly whatI could eat - nothing more and nothing less - no questions and no prep/clean up
