I know it can cause hirsutism or excessive *body* hair, but I know it can contribute to loss, too, on your head (though it's used for some auto immune hair issue to help them KEEP their hair... But that's a different issue). It can make your hair brittle. By any chance, with your transplant, are you on any other meds that could also contribute to your issue? Are you on a high dose? Higher doses are more likely to contribute to hair loss than low doses.