My $0.02 on this...
1. Yes, the x-rays in the check-in section are more potent than in the carry-on. But, how does/will that affect a solid object, such as pills (and yes, I know that it has a greater possibility of affecting a liquigel type caplet of medicine)? I know its enough to affect electronic equipment such as camera and computers, but solids?
2. If there are (and I speak from experience with a cancer patient here) 50 some odd pills to take a day, with each vial about 1" to 3" in diameter and 3" to 5" in height, how would one propose to get this volume of luggage past the carry-on restrictions?
3. Assuming the people know the risk(s) of checking in the medications and are willing to accept them, what is the answer to the question zulaya posted: can pills be packed in checked in luggage, not in their original packaging? Seems to me that people are just hypothesizing/giving worst case scenarios, not answering the question.
4. Again, speaking from experience, I have a "note from my doctor" and another prescription for all my medications that I take on my person at all times when I'm traveling. The insurance companies grouse about it, but when you explain what has happened (ie. your luggage has been lost, you dropped it when you were getting on the plane and it shattered spilling its liquid contents all over the tarmac(why, yes, this did happen to me, thanks for asking

) , and why you need the prescription refilled before it is due, they do pay it..
Whew. That was kind of long for a lurker. Thanks for listening.
