How about the 3-1-1 rule at the airport is medication seperate from that rule? I have two liquid meds that I have to bring, 1 is in a 100ml bottle and the other is in a 500ml bottle (my son has to take antibiotis 3 days out of the week, every week), my husband thinks they won't except the big bottle, and we will have to transfer to a smaller bottle, but will they accept a make shift label?