Migraine is not just a headache, as anyone who suffers from it knows. It's hard to put into words the pain and suffering you feel when you can't do anything, can't look at the light, sometimes vomit, and spend the whole day in a dark room. So today we're talking about a new drug that can help control and prevent migraines. That's the Erenumab vaccine.
What is Erenumab?
Simply put, Erenumab is a migraine prevention drug. This is not a drug that you take to relieve the pain when you have a migraine, but a drug that only reduces and controls the migraines.
This belongs to a class of drugs called ``monoclonal antibodies''. Simply put, this is a protein specially made in a laboratory that works like our own antibodies. It blocks (that is, stops the action of) a chemical in our body that helps trigger migraines. In Sri Lanka, you may find this drug under the brand name Aimovig.
Things you need to tell your doctor before taking this medicine
Before you start taking the Erenumab vaccine, you should definitely discuss these things with your doctor, as this information is very important for your safety.
- Circulatory problems: If you have a condition such as Raynaud's syndrome, which causes your fingers to become cold, pale, or blue.
- High blood pressure: If you already have high blood pressure or are taking medication for it.
- Allergies: If you have any allergies to erenumab, latex (some injection equipment may contain these), other medications, foods, or dyes, you should tell your doctor.
- Pregnancy: If you are pregnant or are expecting to become pregnant soon.
- If you are a breastfeeding mother: If you are a breastfeeding mother.
By telling your doctor these things without hiding them, he can accurately determine whether this medication is right for you or not.
How do you use this medicine?
This is an injection that is given under the skin. Usually, your doctor or nurse will give you clear instructions on how to use it at home. It is very important to follow these instructions exactly. Do not stop taking it until your doctor tells you to.
The most important thing!
Never throw used needles and syringes in the trash. It is very dangerous for you and others. They should be put in a special, safe container called a ``sharps container'' that can be removed. If you don't have one, ask your doctor about one.
What if the dosage of the medicine increases?
If you think you have taken an overdose by mistake, do not panic and immediately call the National Poisons Information Centre at the Colombo National Hospital , or go to the Emergency Treatment Unit (ETU) of the nearest hospital.
Remember, this medicine has been prescribed for you only. Never give it to a friend, even if they have the same symptoms as you.
What if I miss a dose?
If you forget to take your medicine, take that dose as soon as you remember. But if it is almost time for your next dose, skip the missed dose and take the next dose at the scheduled time. Never take two doses at once.
What are the possible side effects of this medicine?
Like any medicine, Erenumab can cause some side effects. Not everyone gets them, but it's important to be aware of them.
| Nature of the side effect | Characteristics and what to do |
|---|---|
| Side effects that you should report to your doctor immediately | |
| Severe allergic reactions (Allergic reactions / angioedema) | Skin rash, itching, swelling of the face, eyes, lips, tongue or limbs, difficulty swallowing or breathing. If any of these occur, seek medical advice immediately. |
| Severe constipation | If you don't have a bowel movement for more than 3 days , or if it's accompanied by severe abdominal pain, bloating, nausea, or vomiting, this could be a serious condition. Call your doctor immediately. |
| Increased blood pressure | If you have symptoms of a sudden increase in blood pressure (such as severe headache, chest pain), inform your doctor. |
| Raynaud syndrome | Coldness, numbness, pain, and color changes (white, blue, red) in the fingers or toes. |
| Things to tell your doctor if they persist or are bothersome | |
| General constipation | Constipation after starting the medication. |
| Muscle pain or limping | Feeling like your muscles are hurting. |
| Injection site reactions | Redness, itching, pain, or swelling where the injection was given. |
How do you store the medicine?
Storing this medicine properly is very important to maintain its quality.
- Refrigeration (the most suitable method):
- Store the medicine in the refrigerator. Never put it in the freezer. If the medicine freezes, do not use it.
- Take the vaccine out of the refrigerator about 30 minutes before giving it and let it come to room temperature.
- If you don't use it after taking it out, don't put it back in the refrigerator.
- Keeping at room temperature:
- In an emergency, this medicine can be kept at room temperature (between 20-25 Celsius) for up to 7 days .
- If you store it outdoors, keep it in its original packaging, away from light.
- If stored at room temperature, it should be used within 7 days. If it is expired or after 7 days, it should be discarded.
Always keep medicines out of the reach of children and pets.
Take-Home Message
- Erenumab is not a drug that reduces the pain of migraines once they occur, but a drug that prevents migraines from occurring.
- Before starting this medication, tell your doctor about all your medical conditions and allergies.
- If you have not had a bowel movement for more than 3 days and experience severe constipation along with abdominal pain, it could be a serious side effect. Call your doctor immediately.
- Always dispose of used needles and syringes safely in a designated container.
- This medicine is for you only. Never share it with anyone else. Talk openly with your doctor about any questions or concerns you may have.











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