When you can't authorize a transaction over the Internet (perhaps because you can't access the Internet, or you need an approval for a high dollar amount), you must call the cardholder's bank to get a voice authorization code. To submit a voice authorization code for a credit card transaction:
Tacrolimus (also FK-506 or fujimycin, trade names Prograf, Advagraf, Protopic) is an immunosuppressive drug used mainly after allogeneic organ transplant to lower the risk of organ rejection.
Tacrolimus is also sometimes used to treat fistulizing Crohn's disease (a condition in which the body attacks the lining of the digestive tract, causing pain, diarrhea, weight loss, fever, and the formation of abnormal tunnels connecting the digestive tract to other organs or the skin).