This Immune Boosting Grapefruit Banana Smoothie is full of ALL the GOOD STUFF!  Vitamins, minerals, fibre…Not only is it packed with wholesome goodness, but it’s the easiest smoothie I have ever made.  With only 4 ingredients (JUST FOUR) it’s really easy to make, and it is SO DELICIOUS, your taste buds won’t believe what hit them.