This sounds like a nightmare. I'm glad it turned out as harmlessly as it did. I'm also super-sensitive to caffeine (or pretty much any substance), to the point that I practically only get coffee at Starbucks, since Starbucks has a .pdf online that lists the caffeine content of each drink; it allows me to know how I'm dosing myself.... but I had NO idea that a simple juice at Starbucks might also contain caffeine!

Thanks for the link to Caffeine Informer. Very helpful. Stay well.