"Medical" liquids include contact lens solutions and are outside the 3-1-1 restrictions. Lotions, shampoo, cleansers, etc., fall within those restrictions, but you can buy small re-usable containers; three ounces of anything is way more than enough for a six-day trip.

What I usually do, if I'm going on a longer trip and don't have enough room in one bag for all my liquids (which includes an Epi-Pen and an albuterol inhaler as well as the contact lens stuff), is just have a second quart ziploc bag for my medical liquids. I've never had an issue or even a question with that. But if you need larger quantities of your medical liquids, you're entitled to them.