Has your doctor told you or someone you know has a nervous system condition called Neuromyelitis Optica Spectrum Disorder (NMOSD)? You may have been told to use a vaccine called Satralizumab as a treatment for it. Hearing a name like that can be a bit scary, but don't worry. Today, let's talk about this medicine, what it does, and the things you need to be careful about when using it.
What kind of medicine is Satralizumab?
Simply put, Satralizumab is a special vaccine. In medical terms, it is a ``monoclonal antibody'' type of drug. Imagine, our body's immune system sometimes starts attacking our own good cells by mistake. Something similar happens in a disease called NMOSD. What this vaccine does is target a specific part of the immune system that is malfunctioning and control its activity. This can reduce the damage to the nervous system caused by the disease.
This medicine is commonly sold under the brand name `(ENSPRYNG)`. Your doctor may also prescribe it for other conditions. If you have any questions about it, ask your doctor.
Things you need to tell your doctor before starting treatment
Before using this medicine, it is very important to give your doctor a complete description of your health condition. Be sure to tell him/her about the following:
- Current infections: Tell your doctor if you have any infections, such as fever, cough, or cold. Especially viral infections like chickenpox and herpes.
- Liver disease: Tell us if you have any liver-related conditions.
- Vaccinations: Tell us if you have recently received any vaccinations, or if you plan to receive them in the future.
- Allergies: If you have an allergic reaction to any medicine, food, preservative, or coloring, not just this medicine, you must tell us about it.
- Pregnancy: If you are pregnant, or are planning to become pregnant soon, talk to your doctor about it.
- Breastfeeding: If you are a breastfeeding mother, be sure to inform about that as well.
How do you use this medicine?
This medicine is given as an injection under the skin. It is usually given by a trained medical professional in a hospital or clinic.
However, in some cases, your doctor may instruct you to inject yourself at home. If so, you should use the correct dose, exactly as directed, at the correct time . Never use more than your doctor tells you to.
Before each treatment, you will receive a special information leaflet ``(MedGuide)``. It is very important to read and understand it carefully each time.
What to do if you miss a dose of medication?
It is very important not to miss doses of this medicine. If you are unable to go to the hospital on the scheduled day, call your doctor immediately and tell him/her. If you are taking your medicine at home, if you miss a dose, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and take the next dose at the scheduled time. Never take a double dose.
What if I take too much medicine?
If you have any suspicion that you have taken too much of this medicine, immediately call the National Poisons Information Centre at the Colombo National Hospital . Or, go to the Emergency Treatment Unit (ETU) of the nearest hospital.
Things we need to be especially careful about when taking medicine
Your doctor will monitor your condition regularly while you are taking this medicine. You should also be aware of these things.
- Be careful about infections: Since this medicine reduces the body's immunity to some extent, you can easily get infections. Therefore, if you experience symptoms such as fever, chills , sore throat, and cough , do not self-medicate and tell your doctor immediately. Minimize contact with sick people as much as possible.
- Be careful with painkillers: Do not take painkillers like aspirin and ibuprofen without your doctor's advice, as these can suppress your fever, which can make it difficult to tell if you have an infection.
- Be aware of vaccinations: This medicine may reduce the body's response to some vaccines. You should especially avoid getting live virus vaccines. If you need to get any vaccinations, talk to your doctor about it beforehand.
- Dental health: Be careful when brushing and flossing your teeth, as your gums may bleed easily or become infected. If you are undergoing any dental treatment, inform your dentist that you are taking this medicine.
- Blood Tests: You will need to have regular blood tests while taking this medicine.
What are the possible side effects?
Like any medication, this one can cause some side effects. Some of them require immediate attention, while others are usually not serious.
| Type of side effect | Symptoms |
|---|---|
| If you experience these symptoms, tell your doctor immediately. | |
| Allergic Reactions | Skin rash, itching, swelling of the face, lips or tongue, difficulty breathing. |
| Signs of Infection | Fever, chills , persistent cough, sore throat, pain when urinating. |
| Signs of Liver Injury | Dark yellow or brown urine, yellowing of the eyes or skin, pain in the upper right part of the stomach, loss of appetite, nausea, pale stools, extreme fatigue. |
| These are usually not serious, but if they persist, tell your doctor. | |
| Other side effects | Headache, joint pain, nausea, stomach discomfort, fatigue, depressed mood, weight gain. |
This list does not include all possible side effects. If you experience any unusual symptoms in addition to these, talk to your doctor about them.
Take-Home Message
- Satralizumab is a specific vaccine given for a nervous system condition called NMOSD.
- Before starting treatment, tell your doctor all your health information (especially infections, liver disease, allergies).
- Protect yourself from infections while taking this medicine. If you develop symptoms such as fever and cough, tell your doctor immediately.
- Do not skip scheduled doses. Never take two doses at once.
- Talk to your doctor before taking any other medication or vaccine.
- If you experience symptoms of a severe allergic reaction or liver damage, seek medical advice immediately.
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