As I mentioned earlier, my Doctor's letter usually worked in getting a couple of bottles of Boost through security, but later on, the trade-off became that sometimes in exchange for allowing me to take it, they insisted on hand patting me down. Being one who can get angry at such antics and not having a lot of respect for these type of authority figures, rather than get in arguments with them and tell them how stupidly they were acting, I simply gave up the fight. But again, I don't really need the stuff anymore. I just like it for a snack on the plane rather than getting my teeth full of dry pretzels or crackers, which take me a lot of water to wash down. If I really needed a med or nutritional aid like some of you do, I would probably raise all kinds of Hell.