Congratulations on the beginning of your weight loss journey! This bariatric post-op starter kit will provide all of the vitamins/minerals and protein needed for the first few weeks after surgery; iron is not included and will have to be taken separately. Our Essential Multi 4 in 1 shake provides a robust bariatric multivitamin and whey protein isolate to provide ease in meeting your nutrient goals after surgery. Our blender bottle helps make mixing shakes simple and easy since our bottles have ounce markings on the side so you can track your fluids.