Okay, I've read TSA's guidelines and still have a couple of questions. We have quite a bit of medicine between the 4 of us. I understand that solid pills are fine just in the carry ons. My son takes liquid Zyrtec that comes in a large bottle three months worth at a time. I just show this to them up front right? Is there some form I need to fill out. Now what about capsules with powder in them? Do they count as gel?