Clear Liquids after a fill

How can you get in your protein if you are on clear liquids for two days after you a get a fill?

You can't get your protein in when you are on clear liquids -- you should be able to get all your protein in (shakes, yogurt, etc.) if you are on FULL liquids though!  If they truly specify clear liquids just do your best before and after the fill to get a little extra in when allowed. Your body can go a couple days without as long as you nearly always get the right amount!