What you need to know about Inebilizumab injection

Has your doctor prescribed you a shot called Inebilizumab? Or have you heard of this drug before? Since it is a somewhat specific, powerful drug, you may have questions, curiosity, and perhaps even a little fear about it. That is very normal. Don't worry, in this article we will talk about this drug, what it does, and what you need to be careful about when taking it, in a simple way that you can understand.

What really happens with this medicine?

Simply put, Inebilizumab is a drug that controls the functioning of our body's immune system. Think of our body's immune system as an army that protects a country. Its main job is to fight off enemies like germs and viruses from outside and protect us from diseases. However, sometimes our own defense forces make a small mistake. They mistake our own healthy, good cells and tissues for "the enemy" and start attacking them. We call this condition an autoimmune disease. This drug called Inebilizumab is mainly used to treat two such autoimmune diseases. 1. Neuromyelitis Optica Spectrum Disorder (NMOSD): In this case, our immune system attacks the nerves that connect to the eyes and the nerves in the spinal cord. As a result, those nerves become swollen and damaged, causing various symptoms such as vision problems and difficulty walking. 2. IgG4-related disease: This is another autoimmune condition. In this, various organs in the body (e.g., pancreas, kidneys) can become swollen, thickened, and scarred. So, what the Inebilizumab vaccine does is temporarily control this unwanted part of our immune system. To be precise, it belongs to a class of drugs called monoclonal antibodies . That means it's like a missile that hits its target. It targets a specific type of cell in our immune system that is involved in this mistaken attack and stops it from functioning. This reduces the damage to healthy cells.

Things you need to tell your doctor before starting medication

Before starting this medication, it is extremely important to talk openly with your doctor about your complete health condition. Because, we need to be very careful when using this medication with certain conditions. Be sure to tell your doctor the following information.

How is this medicine given?

Inebilizumab is not a vaccine that you can take home and inject yourself. It is a vaccine that is given to you by trained medical staff in a hospital or clinic . It is usually given as a subcutaneous injection.

• MedGuide leaflet: Before each treatment session, you will be given a special information leaflet (MedGuide) about this medicine. It is very important to read the information in it carefully each time.
• Taking treatment on time: To get the full benefits of this medication, it is essential to take your treatment doses on time and on the scheduled days. If you are unable to go on a scheduled day, notify your medical team immediately.
• If you take too much medicine: This is very unlikely to happen as it is given in a hospital. However, if you think 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 to be especially careful about when taking medication

Doctors will be constantly monitoring your health while you are taking this medication, but it is important for you to be aware of these things as well.

Risk of infection

Because this medicine reduces the activity of the immune system, you are at a slightly higher risk of developing infections than the average person.

• If you develop symptoms of a cold, such as fever , chills, sore throat , and cough , tell your doctor about it.
• If a wound does not heal quickly , if you experience pain or burning when urinating , or if you feel more lethargic than usual , seek medical advice.
• During this time, try to stay away from people who have contagious illnesses like colds . Don't go to the pharmacy to get medicine on your own.

Serious Allergies and Infusion Reactions

Some people may have allergic reactions when they are given this medicine or shortly after. To reduce this risk, doctors may give you other medicines (such as antihistamines) before you take the medicine. But watch out for these symptoms:

• Red, itchy rash on the skin
• Swelling of the face, lips, tongue, or throat
• Difficulty breathing , chest pain
• Dizziness , feeling of being unwell

If you experience any of these symptoms, tell the nurse or doctor treating you immediately.

Serious brain infections

This is a very rare, but very serious side effect. In some patients, this medicine can cause a serious infection that affects the brain.

Possible problems with other medications

It is important to tell your doctor about all the medicines you are taking, especially:

• Live virus vaccines: You cannot receive live virus vaccines while taking this medicine because, due to low immunity, you may develop the disease from the vaccine.
• Steroid medications: If you are taking medications like Prednisone or Cortisone, tell them about it.

Therefore, tell your doctor not only about the prescription medications you are taking, but also about any traditional medicines, vitamins, and dietary supplements you are taking. Also, tell your doctor if you smoke or drink alcohol.

What are the possible side effects?

Like any medicine, Inebilizumab can have side effects. But not everyone gets them. Let's break these down into two categories.

Side effects that should be reported to your medical team immediately are usually not serious (but tell your doctor if they persist).

Side effect	Characteristics
Serious allergic reactions	Skin rash, severe itching, swelling of the face/lips/tongue/throat.
Infusion reactions	Chest pain, difficulty breathing, dizziness, fainting.
Signs of infection	Fever, chills, cough, sore throat, non-healing wounds, urinary tract infections, and malaise.
Symptoms related to the nervous system	Dizziness, loss of balance, confusion, difficulty speaking.
Back pain	Back and neck pain.
Headache	Common headache.
Joint pain	Joint pain.

This list does not include all possible side effects. If you experience anything unusual, talk to your doctor about it.

Take-Home Message

• Inebilizumab is a specific drug that controls the immune system and treats autoimmune diseases such as NMOSD.
• Before starting treatment, it is imperative that you tell your doctor your complete medical history, all other medications you are taking, and if you are trying to get pregnant.
• Avoid getting pregnant completely while taking this medicine and for 6 months after stopping it.
• Seek immediate medical attention if you develop signs of infection such as fever and cough, signs of allergy such as skin rashes, or nervous system symptoms such as difficulty speaking/walking.
• Do not miss your scheduled treatment dates. If for some reason you are unable to attend, please inform your hospital or clinic in advance.
• If you have any further questions about this medicine, don't hesitate to ask your doctor.

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