When a doctor recommends a vaccine called Natalizumab to you or someone you know, it's normal to have a lot of questions about it. "What disease is this given for?", "Will it really cure?", "Are there any side effects?" You may be wondering the same thing. So, today, let's talk about this drug called Natalizumab in a simple way that you can understand.
What kind of medicine is Natalizumab?
Simply put, Natalizumab is a treatment. That is, it does not cure the disease completely, but it helps control symptoms and reduce the frequency of flare-ups. This drug is mainly used for two conditions.
1. For the condition of Relapsing Multiple Sclerosis:
Think of it this way: our nervous system is like a wire that carries electrical signals. In a disease called multiple sclerosis, the protective covering (myelin) around these nerve fibers is damaged. Then those electrical signals don't travel properly. This can cause symptoms like difficulty walking, vision problems, difficulty speaking, and loss of consciousness. Natalizumab works by controlling this damage and reducing the frequency of exacerbations of the disease.
2. For Crohn's disease:
Crohn's disease is a chronic inflammatory condition of the digestive system, especially the intestines. It can cause symptoms such as abdominal pain, bloating, and weight loss. Doctors may recommend the drug Natalizumab when other treatments have not worked.
The most important thing is that your doctor will decide whether this medication is right for you and how long you should take it. Therefore, it is very important to follow his or her instructions.
Doctors may also use this medicine for other conditions. If you have any questions about it, ask your doctor or pharmacist. The brand name of this medicine is Tysabri.
What should I tell the doctor before taking this medicine?
Before you start taking Natalizumab, it's important to tell your healthcare team (i.e., doctors and nurses) some information, as that information will help them decide if this medicine is right for you or if you need to take any special precautions.
If you have these things, definitely say so:
- Immune system problems: If you have any weakness or problem with your body's disease-fighting system (immune system), tell us about it. This is because this medicine also affects the immune system, so it is important to be aware of it.
- Progressive Multifocal Leukoencephalopathy (PML): This is a rare but very dangerous brain infection. If you have ever had this condition, you should tell your doctor.
- If you have an allergic reaction to Natalizumab or other medicines, foods, dyes, or preservatives: Some people can be allergic to certain medicines. So if you have had any previous allergies to this medicine or any other medicine, tell your doctor.
- If you are pregnant or trying to get pregnant: Some medications can be harmful to the baby during pregnancy, so it is important to talk to your doctor about this.
- If you are a breast-feeding mother: Some medications can pass to your baby through breast milk. So tell your doctor about this as well.
In addition to these things, it is also very important to tell your doctor about any other medications you are taking (prescribed, over-the-counter, traditional medicines, vitamins, herbal products).
How do you use this medicine?
Natalizumab is given as an infusion into a vein. It's like giving a saline solution. You can't do this at home. It's given to you by a healthcare professional, such as a doctor or nurse, in a hospital or clinic.
This medication is usually given about once a month, but this may vary depending on your condition.
When you are prescribed this medicine, the pharmacy will give you a special guide (MedGuide) . You will receive this with every prescription, every time you get the medicine. It is very important to read this carefully. It contains information about the medicine, side effects, and things to be careful about. If there is anything you do not understand, do not be afraid to ask your doctor or pharmacist.
Can this medicine be given to children?
This medication is not generally approved for use in children. If you are considering this medication for your child, you should talk to your pediatrician about it.
What to do if you take too much medicine? (Overdosage)
Since this is given in a hospital, the chance of this happening is low. However, if you think you have taken too much medicine, call a poison control center or emergency room immediately.
This medicine is for you only! This is something that the doctor has prescribed for your condition and your body. Therefore, never share this medicine with anyone else.
What do you do if you miss a dose of medication?
It is very important to take this medicine on time. If you miss a scheduled appointment, call your doctor or healthcare professional right away. They will tell you what to do next. Don't make decisions on your own.
What other medications may interact (conflict) with this medicine?
This is a very important point. There are some medications that can cause problems when taken with Natalizumab. Therefore, it is essential that your doctor is aware of all medications you are taking.
Do not take Natalizumab with the following medications:
- Biologic medicines, such as adalimumab, certolizumab, etanercept, golimumab, and infliximab, also affect the immune system, so they can increase the risk of serious infections.
These medications may also interact with Natalizumab:
- Azathioprine
- Cyclosporine
- Interferons
- 6-mercaptopurine
- Methotrexate
- Other medicines that lower your chance of fighting an infection
- Steroid medicines - examples: prednisone or cortisone
- Vaccines - Be careful when getting live vaccines, especially. Talk to your doctor about this.
This list may not include all medications. Therefore, tell your doctor about all medications you take (including herbs, non-prescription drugs, and dietary supplements), and if you smoke, drink alcohol, or use illegal drugs. Some things can interact with your medications.
What are the things to be careful about when taking this medicine?
While you are taking this medicine, your doctor will check you regularly. Be sure to see your doctor on the scheduled days. Tell your doctor if your symptoms do not improve, if they get worse, or if they persist.
Stay away from people who are sick. This medicine may slightly affect your immune system, making you more likely to catch illnesses. If you develop symptoms like fever, chills, sore throat, or runny nose, call your doctor immediately for advice. Do not go out to get medicine alone.
Very important warning: risk of brain infection (PML)
This may sound a little scary, but it's important to be aware. In some patients, although very rarely, the drug Natalizumab can cause a serious brain infection called Progressive Multifocal Leukoencephalopathy (PML) . This can even be fatal.
Therefore, if you experience any of these symptoms, you should tell your doctor immediately:
- Vision changes (e.g., sudden blurred vision, double vision)
- Thinking difficulties (e.g., agitation, memory loss, difficulty making decisions)
- Speech difficulties (e.g., slurring words, unable to speak clearly)
- Difficulty walking (e.g., loss of balance, inability to walk properly)
- Difficulty standing
If you can't reach your doctor, go to the emergency room immediately. Don't ignore this. These symptoms may or may not be signs of PML. But it's best to get tested.
What are the possible side effects of this medicine?
Like any medicine, Natalizumab can cause some side effects. Not everyone gets them, but it's good to be aware of them.
Side effects that should be reported to your doctor or healthcare professional immediately:
- Allergic reactions: Symptoms such as skin rash, itching, hives, swelling of the face, lips, and tongue.
- Difficulty breathing.
- Changes in vision.
- Chest pain.
- Confusion, anxiety.
- Depressed mood, feeling like you're losing your joy.
- Dizziness.
- Feeling faint; lightheaded; falls.
- General ill feeling or flu-like symptoms.
- Loss of memory.
- Women who do not have their menstrual periods on their due dates (Missed menstrual periods).
- Muscle weakness.
- Problems with balance, talking, or walking. (These can also be signs of PML, so be especially careful!)
- Signs and symptoms of liver injury: Dark yellow or brown urine; feeling unwell, feverish; pale stools; loss of appetite; nausea; pain in the upper right side of the abdomen; unusual tiredness or weakness; yellowing of the eyes or skin.
- Suicidal thoughts, mood changes.
- Unusual bruising or bleeding.
- Unusually weak or tired.
Side effects that usually do not require medical advice (but should be reported to the doctor if they persist or are bothersome):
- Headache
- Joint pain
- Muscle cramps
- Muscle pain
- Nausea, vomiting
- Pain, redness, or irritation at site where injected
- Tiredness
This list may not include all side effects. If you notice anything unusual in addition to these, ask your doctor.
Where do you keep this medicine?
You will not be allowed to take this medicine home. It is available and given to you at a hospital or clinic. Therefore, you do not need to worry about how to store it.
Finally, things to remember (Take-Home Message)
Okay, so we've talked a lot about Natalizumab. If you have any more questions about this medicine, don't be afraid to ask your doctor, nurse, or pharmacist. They will help you.
The most important thing is to take the treatment exactly as your doctor tells you, at the right time, and in the right way. Be aware of side effects, especially the symptoms of a condition called PML. If you notice anything unusual, tell your doctor immediately.
This medicine can help you control your condition. So, stay strong and join the doctor on this journey. Wishing you a speedy recovery!
` Natalizumab, Multiple Sclerosis, Crohn's disease, PML, Drug side effects, Immunotherapy, Tysabri
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