See also Warning section.
Shaking, headache, diarrhea, nausea/vomiting, upset stomach, loss of appetite, trouble sleeping, and numbness/tingling of the hands/feet may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.
Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor right away if you have any serious side effects, including: mental/mood changes, dizziness, signs of kidney problems (such as change in the amount of urine), pounding heartbeat, symptoms of heart failure (such as shortness of breath, swelling ankles/feet, unusual tiredness, unusual/sudden weight gain), hearing problems (such as hearing loss, ringing in the ears), pain/redness/swelling of arms or legs, easy bruising/bleeding, muscle pain/cramp/weakness, signs of liver problems (such as nausea/vomiting that doesn't stop, yellowing eyes/skin, dark urine, stomach/abdominal pain), severe leg pain.
This medication may also increase your risk of getting a rare but very serious (sometimes fatal) brain infection (progressive multifocal leukoencephalopathy-PML). Get medical help right away if any of these rare but very serious side effects occur: clumsiness, loss of coordination, weakness, sudden change in your thinking (such as confusion, difficulty concentrating), difficulty moving your muscles, problems with speech, seizure, vision changes.
Get medical help right away if you have any very serious side effects, including: fainting, fast/irregular heartbeat, severe dizziness, chest/jaw/left arm pain, black stools, vomit that looks like coffee grounds.
This medication may raise your blood pressure. Check your blood pressure regularly and tell your doctor if the results are high. Your doctor may control your blood pressure with medication.
Tacrolimus may cause diabetes. Tell your doctor or pharmacist if you experience any of the following symptoms of high blood sugar: increased thirst/hunger, frequent urination.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.