Jen, boy can I relate! I take numerous medications and some are large and taken in large numbers. I don't think there will be a problem since they are not narcotics but it would help if the chemical name is listed as well as the proprietary name so they can know what it is. However I have read that we should keep them in original containers and that if we can bring the prescription that is good too. I have a computer sheet I get from the medical center I go to that is updated at each visit. This lists my meds and my diagnoses. I will be bringing a recent one to show my meds are current, etc. I can also use this if I need to see a doctor while in Spain. Some of my diagnoses are standard type stuff, like asthma, while others are rare and so I also translated them into Spanish onto a piece of paper to take along. There is a program on-line that I used to do this but darn if I can figure out the name right now - sorry.
As a disclaimer I should add that I have not gone on my first camino yet, due to arrive in Spain May 16th ; )
Stefania