Hm. I don't think it's against federal law to carry prescriptions like that. I believe every state has their own laws. But yes, I see what you guys mean.

In my state, it's apparently fine to carry prescriptions around in my own container as long as I have the original paperwork that comes with my prescription. (My pharmacy always staples it to my prescription.) Not sure about other states, but I can always look that up before traveling.