Originally Posted by WillCAD

Traveling without your nitro is too big a risk. I recommend that you remove them from the original bottle and put them in a standard unlabeled pill carrier, which you can get at any pharmacy. You can still put the empty original bottle in your luggage, but while transiting the c/p, you can keep the nitro pills anonymous.

If asked what they are, all you have to say is, "Those are my heart pills."