Let's learn about the Pegvaliase vaccine for PKU.

Do you or someone in your family have a condition called Phenylketonuria? If so, your doctor may have prescribed you a medication called Pegvaliase. Since this is a somewhat special medication, it is normal to have some questions and concerns about it. So today, let's talk about this medication and the things you should be aware of when using it.

What is this Pegvaliase vaccine?

Simply put, Phenylketonuria (PKU) is a condition in which our bodies cannot properly digest an amino acid called phenylalanine. This is something that is usually found in the protein-rich foods we eat. When this phenylalanine accumulates in the body of a person with PKU, it builds up in the blood and can cause damage, especially to the brain, over time.

So, what this Pegvaliase injection does is reduce the levels of that unwanted, excess phenylalanine in the blood. It usually comes under the brand name Palynziq.

Things you need to tell your doctor before taking medicine

Before starting this medication, it is very important to talk to your doctor about these things clearly and honestly. Don't hide anything.

• Tell us if you have any allergies to Pegvaliase or any other medicine, food, or dye.
• If you are pregnant or hoping to get pregnant, be sure to say so.
• If you are a breastfeeding mother, inform your doctor about that as well.

Based on this information, it will be easier for the doctor to decide whether this medicine is right for you or not.

How to use the vaccine correctly?

This is a subcutaneous injection. Your doctor or nurse will usually give you clear instructions on how to give it to yourself at home. It is very important to follow these instructions exactly.

• Take the right dose, at the right time: Take the medicine only when and in the right amount as prescribed by your doctor. Never take more than the prescribed amount.
• Dispose of needles and syringes properly: Never throw used needles and syringes in the trash. Instead, place them in a special sharps container. If you don't have one, ask your doctor for one.
• Special information leaflet (MedGuide): Before each treatment, you will be given a special 'MedGuide', a leaflet with details about the medicine. Always read it carefully.

What if I miss a dose of medicine?

If you suddenly miss a dose, don't worry. Don't take the missed dose. Take the next dose at your regular time. Never take a double dose.

What if I overdose?

If you think you have taken too much 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. This is an emergency, do not delay.

Things to be especially careful about when using this medicine:

This part is very important. You should be careful about these things throughout the entire period of using this medicine.

Severe Allergic Reaction

The main and most serious risk of this medication is the possibility of a severe allergic reaction, or in medical terms, anaphylaxis. This is a life-threatening emergency.

For this reason, your doctor will often prescribe an epinephrine auto-injector, a special injection that can be used in an emergency. You should always keep it with you.

Imagine that you get a shot and within a short time, you have difficulty breathing, your face and lips swell, and you feel dizzy. That could mean you have a severe allergic reaction. If that happens, you should immediately get that epinephrine shot and go to a hospital's emergency room (ETU) as soon as possible.

Because of this risk, your doctor will often tell you to have someone with you during and for an hour after the injection. This is so that if you have a severe allergic reaction, that person can help you and get you to the hospital quickly.

Regular medical check-ups and diet control

• Medical tests: Your doctor will monitor you regularly while you are taking this medicine. He or she will also order regular blood tests (blood work) to check the level of phenylalanine in your blood. Do not skip these.
• Diet: Remember when we talked about the special diet you need to follow for PKU? While taking this medication, you should also follow the special diet prescribed for you. Do not make any changes to your diet without consulting your doctor.

Side effects of the medicine

Like any medication, this one can have some side effects. Don't worry, but it's important to be aware of these.

Can there be problems with other medications?

Yes, some medications can interact with this vaccine. For example, things like the medroxyprogesterone acetate vaccine, which is used for birth control or hormone therapy.

This is not a complete list. Therefore, tell your doctor about all the medications you are taking (including vitamins, herbal remedies, and supplements). Also, tell your doctor if you smoke or drink alcohol.

How to store medicine properly?

This is also very important. To maintain the quality of the medicine, it must be stored properly.

• Refrigerate: Store the medicine in the refrigerator at a temperature between 2 and 8 degrees Celsius. Never store it in the freezer.
• Room temperature: If necessary, you can keep this medicine at room temperature (20-25 degrees Celsius) for up to 30 days.
• Most importantly: It is very important that you do not put medicine back in the refrigerator after it has been taken out of the refrigerator. If it is kept at room temperature, it should be used within 30 days. After 30 days, safely dispose of any remaining medicine.
• Do not use expired medicine.

Pegvaliase, Phenylketonuria, PKU, Palynziq, Phenylalanine, Anaphylaxis, Vaccine