Tacrolimus Hard Capsules is a generic medicine which belongs to the immunosuppressants class of drugs. This medication weakens the immunity of the immune system to assist your body to accept the new body organs. It is used in conjunction with other medicines to prevent rejection of kidney, liver or heart transplant. Tacrolimus hard capsules are consumed by simply swallowing by mouth as per the directions provided by the doctor. It can be taken with or without food but it is recommended to take this drug if you have nausea or upset stomach. There may be some minor bad effects after taking these medication such as diarrhea, trouble sleep, tingling of feet/hands and headache.