The only problem with teas is that they naturally contain small amounts of mold/fungi. If you can reduce the use of tea until later in the diet…this would be best. If this is one of your few cheat items, then its not the end of the world.
I was really sensitive to molds for awhile, and I just found one that contains low amounts of molds after 5 different brands. If its organic, there will be less mold as well.