@rowdyramsey, Tacrolimus is one of the medicines that I also take for my Liver and kidney transplant. In fact have taken it for 11 years now and have not noticed any rash or blisters as you describe. It sounds like this was in the past, -I sure hope so.

Unrelated to tacrolimus -I want to add that I am from a family who sweats alot when active, and I have developed an itchy redness after wearing my sun hat, and along areas lere my clothing fits snug and wet with sweat especially during summertime hiking. Scratching makes it more uncomfortable, and I didn't want to cause any open areas, so I (ready for this?) use a little bit of foot powder - the OTC powder for athletes foot care - and it works to cure the itch. A dermatologist suggested that I try it.