Green tea and Tacrolimus

Its seems like tacrolimus gets in trouble with lot of things.  Since its a substrate for the P450 system, it is good to monitor with any new medication.
Recent report suggests that green tea might increase tacrolimus levels. In this particular case discussed in AJKD, poor metabolism was also a culprit but green tea is something to watch out for.

Take a look
http://www.ncbi.nlm.nih.gov/pubmed/21787983