Tacrolimus lowers the body's ability to fight an infection/disease (immunosuppression). This effect may increase your risk of developing an infection or certain types of cancer (such as skin cancer, lymphoma). To reduce the risk of these serious side effects, take this medication at the lowest effective dose as directed by your doctor. Keep all medical and laboratory appointments.
Tell your doctor immediately if you develop any of the following: unusual skin changes, change in the appearance/size of moles, unusual growths/lumps, swollen glands, night sweats, unexplained weight loss, signs of infection (such as fever, persistent sore throat).
This medication is not recommended for use to prevent organ rejection after a liver transplant.Who should not take tacrolimus?
Tacrolimus is used with other medications to prevent rejection of a kidney transplant. This medication belongs to a class of drugs known as immunosuppressants. It works by weakening your body's defense system (immune system) to help your body accept the new organ as if it were your own.
OTHER USES: This section contains uses of this drug that are not listed in the approved professional labeling for the drug but that may be prescribed by your health care professional. Use this drug for a condition that is listed in this section only if it has been so prescribed by your health care professional.
This medication may also be used with other medications to prevent rejection of other types of transplant (such as heart).
Read the Medication Guide and, if available, the Patient Information Leaflet provided by your pharmacist before you start taking tacrolimus and each time you get a refill. If you have any questions, ask your doctor or pharmacist.
Take this medication by mouth on an empty stomach (1 hour before or 2 hours after a meal) as directed by your doctor, usually once daily in the morning. Talk to your doctor about how to take this medication if you have nausea or an upset stomach.
Swallow the capsules whole. Do not crush or chew the capsules. Doing so can destroy the long action of the drug and may increase side effects.
Dosage is based on your weight, medical condition, blood test results (for example, tacrolimus trough levels), response to treatment, and previous dose of tacrolimus (if switching from the form of this medication that is taken twice daily).
Tacrolimus is available in different formulations (such as immediate and extended-release). Do not switch between different forms of tacrolimus without consulting your doctor.
Do not increase your dose or take this medication more often without your doctor's approval. Your condition will not improve any faster and the risk of serious side effects may be increased. Also, do not stop taking this medication without your doctor's approval.
Take this medication regularly in order to get the most benefit from it. It is important to take all doses on time to keep the amount of medicine in your body at a constant level. Remember to take it at the same time each day.
Avoid eating grapefruit or drinking grapefruit juice while being treated with this medication unless your doctor instructs you otherwise. Grapefruit can increase the amount of certain medications in your bloodstream. Consult your doctor or pharmacist for more details.
Tell your doctor if your condition worsens.
See also Warning section.
Remember that your doctor has prescribed this medication because he or she 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: swelling ankles/feet, change in the amount of urine, mental/mood changes, hearing problems (such as hearing loss, ringing in the ears), increased tiredness, tingling hands/feet, dizziness, pain/redness/swelling of arms or legs, easy bruising/bleeding, yellowing skin/eyes, dark urine, persistent nausea/vomiting, severe stomach/abdominal pain, muscle weakness.
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.
Tacrolimus may cause your blood pressure to increase. You may be required to check your blood pressure periodically and/or take another medication to control your blood pressure. Learn how to monitor your own blood pressure at home, and share the results with your doctor.
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.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Before taking tacrolimus, tell your doctor or pharmacist if you are allergic to it; or to other macrolide medications (such as sirolimus, erythromycin); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: mineral imbalances (such as high potassium), kidney disease, any recent/current infections, cancer, liver disease, high blood pressure, diabetes.
Tacrolimus may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can infrequently result in serious (rarely fatal) fast/irregular heartbeat and other symptoms (such as severe dizziness, fainting) that need medical attention right away.
The risk of QT prolongation may be increased if you have certain medical conditions or are taking other drugs that may cause QT prolongation. Before using tacrolimus, tell your doctor or pharmacist of all the drugs you take and if you have any of the following conditions: certain heart problems (heart failure, slow heartbeat, QT prolongation in the EKG), family history of certain heart problems (QT prolongation in the EKG, sudden cardiac death).
Low levels of potassium or magnesium in the blood may also increase your risk of QT prolongation. This risk may increase if you use certain drugs (such as diuretics/"water pills") or if you have conditions such as severe sweating, diarrhea, or vomiting. Talk to your doctor about using tacrolimus safely.
This medication may increase your risk of developing skin cancer. Avoid prolonged sun exposure, tanning booths, and sunlamps. Use a sunscreen with a high protection factor and wear protective clothing when outdoors.
Tacrolimus can make you more likely to get infections or may worsen any current infections. Therefore, wash your hands well to prevent the spread of infection. Avoid contact with people who have infections that may spread to others (such as chickenpox, measles, flu). Consult your doctor if you have been exposed to an infection or for more details.
Do not have immunizations/vaccinations without the consent of your doctor. Avoid contact with people who have recently received live vaccines (such as flu vaccine inhaled through the nose).
This drug may increase your potassium levels. Before using potassium supplements or salt substitutes that contain potassium, consult your doctor or pharmacist.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Older adults may be more sensitive to the side effects of this drug, especially QT prolongation (see above).
During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.
This drug passes into breast milk and the effect on a nursing infant is unknown. Discuss the risks and benefits with your doctor before breast-feeding.
See also How to Use section.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
Some products that may interact with this drug include: aluminum/magnesium antacid, cyclosporine, sirolimus, temsirolimus, ziprasidone, other drugs that may increase the level of potassium in the blood (such as "water pills" including amiloride, spironolactone), other drugs that weaken the immune system/increase the risk of infection (such as natalizumab, rituximab).
Avoid alcohol when using this medication because it may cause the medication to be released too quickly and increase the risk of side effects.
Other medications can affect the removal of tacrolimus from your body, which may affect how tacrolimus works. Examples include caspofungin, cimetidine, danazol, bromocriptine, nefazodone, ethinyl estradiol, methylprednisolone, St. John's wort, azole antifungals (such as itraconazole/voriconazole), calcium channel blockers (such as nifedipine, verapamil), proton pump inhibitors (such as omeprazole, lansoprazole), HIV protease inhibitors (such as nelfinavir, ritonavir), other protease inhibitors (such as boceprevir, telaprevir), rifamycins (such as rifampin, rifabutin), certain anti-seizure drugs (such as carbamazepine, phenobarbital, phenytoin), among others.
If overdose is suspected, contact a poison control center or emergency room immediately. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.
Laboratory and/or medical tests (such as potassium levels, blood sugar, tacrolimus trough level, kidney/liver function) will be performed periodically to monitor your progress or check for side effects. Consult your doctor for more details.
If you have had an organ transplant, it is recommended that you attend a transplant education class or support group. Learn the signs of organ rejection such as a feeling of being ill, fever, or tenderness/pain around the transplanted organ. Tell your doctor immediately if you notice any of these signs.
If you miss a dose, take it as soon as you remember. If it is more than 14 hours after the time you would usually take it, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.
Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.
MEDICAL ALERT: Your condition can cause complications in a medical emergency. For information about enrolling in MedicAlert, call 1-888-633-4298 (US) or 1-800-668-1507 (Canada).
Information last revised March 2014. Copyright(c) 2014 First Databank, Inc.
With WebMD's Medicine Cabinet, you can check interactions with drugs.Go to medicine cabinet