An organ transplant is like a second life, isn't it? It's truly a miracle of medicine. However, there's a high chance that your body will recognize the new organ (a heart, kidney, liver, or lung) that's transplanted in this way as "foreign" and attack it. Tacrolimus is a very important drug that stops that reaction (rejection) and helps the body accept the new organ as part of itself. It's commonly found under the brand name Prograf. So, if you or someone you know is being given this vaccine, it's very important to be fully informed about it.
What actually happens with Tacrolimus?
Simply put, Tacrolimus is an immunosuppressant. Think of your body as a country, and your immune system is the army of that country. Anything that comes in from the outside - like a germ - is attacked and destroyed by this army. This is a really good thing.
However, the newly transplanted organ is also seen as a "foreign" organ by the body. So, the body's own immune system (the immune system) starts to attack the new, valuable organ. This is what we call organ rejection. Tacrolimus works by slightly controlling the activity of your immune system and stopping it from attacking the new organ. This way, the new organ is created in the body and the environment it needs to grow well and do its job properly.
Things you need to tell your doctor before taking this medicine
Before starting tacrolimus, it is very important to tell your doctor about your complete health history. This medicine can affect many systems in the body. Be sure to tell your doctor about:
- Other illnesses you have:
- Diabetes or high blood sugar levels.
- Heart disease or heart rhythm abnormalities.
- High blood pressure.
- Kidney or liver disease.
- Any current infectious condition (fever, cold, cough, etc.).
- Other immune system weaknesses.
- Pregnancy and breastfeeding:
- If you are pregnant, trying to get pregnant, or breastfeeding, it is essential to tell your doctor about this.
- Allergies:
- Tell your doctor if you have any allergies to tacrolimus or any other medicine, food, or dye.
- Vaccinations:
- If you have recently received a vaccine or are scheduled to receive one in the future, tell us about it as well.
Telling your doctor this information without hiding it is very important for your safety as well as the success of your treatment.
How to give Tacrolimus vaccine and other things
This is not a medicine you can take home. Tacrolimus is given intravenously (IV). It is given in a hospital or clinic by a doctor or a trained nurse. So you don't have to worry about missing a dose.
If you think you have accidentally overdosed, it will be managed by the hospital staff. Otherwise, if any other problems arise, it is important to immediately notify the National Poisons Information Centre at the National Hospital or the hospital's Emergency Treatment Unit (ETU) .
Other drugs that may interact with this medicine (Drug Interactions)
Tacrolimus is a medication that can interact with many other medications. Therefore, it is essential to inform your doctor about all the medications you are taking (prescribed by other doctors, over-the-counter medications, vitamins, traditional medicines, and even herbal products).
Let's explain this further with the tables below.
| Never use Tacrolimus with these! | |
|---|---|
| Cidofovir, Cisapride | Mesoridazine, Mifepristone |
| Cyclosporine, Dronedarone | Pimozide, Saquinavir |
| Fluconazole | Thioridazine, Ziprasidone |
| Grapefruit juice | Live virus vaccines |
| Be especially careful about these too. | |
|---|---|
| Some antibiotics | Such as Clarithromycin, Erythromycin, Rifampin. |
| Medicines for HIV or Hepatitis | Antiviral drugs. |
| Antifungals | Like Ketoconazole, Itraconazole, Voriconazole. |
| Medication for high blood pressure | Such as Diltiazem, Nifedipine, Verapamil. |
| Medicines for gastritis | Such as Omeprazole, Lansoprazole, Famotidine. |
| Herbal products | Things like St. John's wort. |
| Other medications | Alcohol, Steroids (such as Prednisone), Sirolimus, Diuretics. |
Things to consider during treatment
- Protect yourself from infections: Tacrolimus weakens your immune system, so you may easily get infections that a normal person would not get. Therefore, stay away from crowded places, stay away from people who are sick, and wash your hands often. If you develop symptoms such as fever, body aches, sore throat, or cough, do not self-medicate and inform your doctor immediately.
- Pregnancy Prevention: Avoid becoming pregnant while taking this medication. Both men and women should use effective birth control. This medication can seriously harm an unborn baby.
- Cancer risk: Taking these immune-suppressing medications long-term may slightly increase your risk of certain types of cancer, such as skin cancer and lymphoma. Talk to your doctor about this.
- Sun protection: This medication may make your skin more sensitive to sunlight. So, if you are going to be in the sun, use a good sunblock, wear a hat, and wear clothing that covers your body.
- Blood sugar levels: This medicine may increase blood sugar levels. If you have diabetes, check your blood sugar levels regularly.
What are the possible side effects?
Like any medicine, Tacrolimus can cause side effects. Some of these are serious and should be reported immediately.
| Side Effect | Description |
|---|---|
| Things to report to your doctor immediately | |
| Allergic reactions | Skin rash, itching, swelling of the face, lips or tongue. |
| Heart problems | Chest pain, difficulty breathing, fast or irregular heartbeat, dizziness. |
| Increased blood sugar | Unusually increased hunger, thirst, frequent urination, blurred vision. |
| Signs of infection | Fever, chills, sore throat, urinary tract infection. |
| Effect on the kidneys | Decreased urine output or difficulty urinating. |
| Nervous system problems | Severe headaches, seizures, vision changes, behavior changes, numbness in the limbs. |
| Things that are usually not serious, but should be reported to the doctor if they persist | |
| Digestive system problems | Stomach pain, constipation, diarrhea. |
| Insomnia | Trouble sleeping. |
| Body swelling (Edema) | Swelling of the hands, feet, ankles, or sudden weight gain. |
Take-Home Message
- Tacrolimus is a very important drug given to prevent the body from rejecting an organ after an organ transplant.
- This is only given in a hospital, under medical supervision.
- It is imperative to tell your doctor about all other medications, vitamins, and herbal products you are taking.
- As it lowers immunity, take special care to protect yourself from infections. If you develop flu-like symptoms, inform your doctor immediately.
- Both women and men should use effective birth control during treatment.
- In case of any problems or doubts, talk to your doctor and follow their instructions exactly.
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