I discovered long ago that caffeine is a no-no for my IBS. I occasionally have a little, but for the most part, I steer clear of the the stuff.I had been drinking an herbal tea blend that worked well for me and tasted grrrreat, but the company has recently discontinued it. It was a cranberry flavor, so I'm after a cranberry tea to replace it.I'm finding that most include hibiscus which can have a laxative effect--something I DON'T want. Anyway, one of my alternates calls itself a de-caf crannberry/black tea blend. I guess this is like de-caf coffee because I thought black tea had caffeine no matter what. How do they do it? Should I be concerned?