Patient information: uses, side effects, how to take - Zilbrysq
What is the most important information I should know about ZILBRYSQ?
ZILBRYSQ is a medicine that affects part of your immune system. ZILBRYSQ may lower the ability of your immune system to fight infections.
ZILBRYSQ increases your chance of getting serious meningococcal infections caused by Neisseria meningitidisbacteria. Meningococcal infections may quickly become life-threatening or cause death if not recognized and treated early.
- You must complete or update your meningococcal vaccine(s) at least 2 weeks before your first dose of ZILBRYSQ.
- If you have not completed your meningococcal vaccines and ZILBRYSQ must be started right away, you should receive the required vaccine(s) as soon as possible.
- If you have not been vaccinated and ZILBRYSQ must be started right away, you should also receive antibiotics to take for as long as your healthcare provider tells you.
- If you had a meningococcal vaccine in the past, you might need additional vaccines before starting ZILBRYSQ. Your healthcare provider will decide if you need additional meningococcal vaccines.
- Meningococcal vaccines do not prevent all meningococcal infections. Call your healthcare provider or get emergency medical care right away if you get any of these signs and symptoms of a meningococcal infection:
- fever
- fever with high heart rate
- headache and fever
- confusion
- muscle aches with flu-like symptoms
- fever and a rash
- headache with nausea or vomiting
- headache with a stiff neck or stiff back
- eyes sensitive to light
Your healthcare provider will give you a Patient Safety Card about the risk of serious meningococcal infection.Carry it with you at all times during treatment and for 2 months after your last ZILBRYSQ dose. Your risk of meningococcal infection may continue for several weeks after your last dose of ZILBRYSQ. It is important to show this card to any healthcare provider who treats you. This will help them diagnose and treat you quickly.
ZILBRYSQ is only available through a program called the ZILBRYSQ Risk Evaluation and Mitigation Strategy (REMS).Before you can receive ZILBRYSQ, your healthcare provider must:
- enroll in the ZILBRYSQ REMS program.
- counsel you about the risk of meningococcal infections.
- give you the Patient Guide, including information about the signs and symptoms of meningococcal infection.
- give you a Patient Safety Cardabout your risk of meningococcal infection, as discussed above.
- make sure that you are vaccinated against serious infections caused by meningococcal bacteria and that you receive antibiotics if you need to start ZILBRYSQ right away and you are not up to date on your vaccines.
ZILBRYSQ may also increase the risk of other types of serious infectionscaused by encapsulated bacteria, including Streptococcus pneumoniae, Haemophilus influenzae, and Neisseria gonorrhoeae.
- Certain people may be at risk of serious infections with gonorrhea. Talk to your healthcare provider about whether you are at risk for gonorrhea infection, about gonorrhea prevention, and about regular testing.
Call your healthcare provider right away if you have new signs or symptoms of infection.
What is ZILBRYSQ?
- ZILBRYSQ is a prescription medicine used to treat adults with a disease called generalized myasthenia gravis (gMG) who are anti-acetylcholine receptor (AChR) antibody positive.
- It is not known if ZILBRYSQ is safe and effective in children.
Who should not use ZILBRYSQ?
- Do not use ZILBRYSQ if youhave a serious meningococcal infection when you are starting ZILBRYSQ treatment.
Before you use ZILBRYSQ, tell your healthcare provider about all of your medical conditions, including if you:
- have an infection or fever.
are pregnant or plan to become pregnant. It is not known if ZILBRYSQ will harm your unborn baby.
- There is a pregnancy registry for women who use ZILBRYSQ during pregnancy. The purpose of this registry is to collect information about the health of you and your baby. If you become pregnant while taking ZILBRYSQ, you or your healthcare provider can contact UCBCares at 1-844-599-CARE (2273) or email ucbcares@ucb.com, to enroll or get more information about the registry.
- are breastfeeding or plan to breastfeed. It is not known if ZILBRYSQ passes into your breast milk. Talk to your healthcare provider about the best way to feed your baby if you use ZILBRYSQ.
Tell your healthcare provider about all the medicines you take,including prescription and over-the-counter medicines, vitamins, and herbal supplements.
Know the medicines you take and the vaccines you receive. Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine.
How should I use ZILBRYSQ?
See the detailed Instructions for Usethat comes with your ZILBRYSQ for information on how to prepare and inject a dose of ZILBRYSQ, and how to properly throw away (dispose of) used ZILBRYSQ prefilled syringes.
- ZILBRYSQ is given as an injection under the skin (for subcutaneous use) in a prefilled syringe. Use ZILBRYSQ exactly as prescribed by your healthcare provider.
- After proper training on how to prepare and inject your ZILBRYSQ syringe, you or your caregiver will inject ZILBRYSQ daily. Your healthcare provider will decide the total daily dose depending on your body weight.
- Each prefilled syringe is for single-use only. Throw away the prefilled syringe after each use. Do not reuse.
- Your daily dose of ZILBRYSQ should be injected at about the same time each day.
If you miss your ZILBRYSQ dose, inject a dose as soon as possible. Then, inject your next dose at your regular scheduled time. Do not inject more than 1 dose each day. Call your healthcare provider if you are not sure what to do.
What are the possible side effects of ZILBRYSQ?
ZILBRYSQ may cause serious side effects, including:
- See " What is the most important information I should know about ZILBRYSQ?"
Inflammation of the pancreas (pancreatitis) and other pancreatic problems.Pancreatitis and pancreatic cysts have happened in people who use ZILBRYSQ. Your healthcare provider will do blood tests to check your pancreas before you start treatment with ZILBRYSQ.
- Call your healthcare provider right awayif you have pain in your stomach area (abdomen) that will not go away. Your healthcare provider will tell you if you should stop using ZILBRYSQ. The pain may be severe or felt going from your abdomen to your back. The pain may happen with or without vomiting. These may be symptoms of pancreatitis.
The most common side effects of ZILBRYSQ include:
- injection site reactions.
- upper respiratory tract infections.
- diarrhea.
Tell your healthcare provider about any side effect that bothers you or that does not go away.
These are not all the possible side effects of ZILBRYSQ.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
How should I store ZILBRYSQ?
- ZILBRYSQ prefilled syringes may be stored in the refrigerator between 36°F to 46°F (2°C to 8°C) until the expiration date on the carton. Do not freeze ZILBRYSQ. Keep the prefilled syringes in the original carton until ready for use to protect from light.
- ZILBRYSQ prefilled syringes may be stored at room temperature up to 86°F (30°C) in the original carton to protect them from light for a single period of up to 3 months. Write the date you removed the prefilled syringes from the refrigerator in the space provided on the carton. After ZILBRYSQ prefilled syringes have been stored at room temperature, do not place them back in the refrigerator and throw them away if not used within the 3-month period or if the expiration date has passed, whichever occurs first.
- Throw away any unused portion.
Keep ZILBRYSQ prefilled syringes and all medicines out of the reach of children.
General information about the safe and effective use of ZILBRYSQ.
Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide. Do not use ZILBRYSQ for a condition for which it was not prescribed. Do not give ZILBRYSQ to other people, even if they have the same symptoms that you have. It may harm them. You can ask your pharmacist or healthcare provider for information about ZILBRYSQ that is written for health professionals.
What are the ingredients in ZILBRYSQ?
Active ingredient:zilucoplan
Inactive ingredients:dibasic sodium phosphate, anhydrous, monobasic sodium phosphate, monohydrate, sodium chloride, and water for injection.
Manufactured for UCB, Inc., Smyrna, GA 30080
ZILBRYSQ ®is a registered trademark of the UCB Group of Companies.
©2025 UCB, Inc., Smyrna, GA 30080.
All rights reserved.
For more information, visit www.ZILBRYSQ.com or call 1-844-599-2273.
INSTRUCTIONS FOR USE
ZILBRYSQ ®(ZIL-brisk)
(zilucoplan)
injection, for subcutaneous use
Single-Dose Prefilled Syringe
This Instructions for Use contains information on how to inject ZILBRYSQ.
Understanding Your ZILBRYSQ Prefilled Syringe
Read this Instructions for Use before using the ZILBRYSQ prefilled syringe. This information does not take the place of talking to your healthcare provider about your medical condition or treatment. See the Medication Guidethat comes with ZILBRYSQ for important information.
Your healthcare provider should show you how to prepare and inject ZILBRYSQ prefilled syringe properly before you use it for the first time. Do not inject yourself or someone else until you have been shown how to inject ZILBRYSQ correctly.
Keep this Instructions for Use and refer to it as needed until you have used all of the ZILBRYSQ prefilled syringes in the packaging.
For general questions or help, please call your healthcare provider or UCBCares at 1-844-599-CARE (2273).
How Should I Store ZILBRYSQ Prefilled Syringes?
- Store ZILBRYSQ prefilled syringes in a refrigerator between 36°F to 46°F (2°C to 8°C) until the expiration date on the carton. Do not freeze ZILBRYSQ.
- ZILBRYSQ prefilled syringes may be stored at room temperature up to 86°F (30°C) in the original carton for a single period of up to 3 months. Write the date you removed the prefilled syringes from the refrigerator in the space provided on the carton. After ZILBRYSQ prefilled syringes have been stored at room temperature, do not place them back in the refrigerator. Throw them away if not used within 3 months or if the expiration date has passed, whichever occurs first.
- Keep the ZILBRYSQ prefilled syringes in the original carton before use.
- Keep ZILBRYSQ prefilled syringes and all medicines out of the reach of children.
Important Information You Need to Know Before You Inject ZILBRYSQ
- Do notuse ZILBRYSQ if the expiration date on the packaging has passed or the carton seals have been broken.
- Do notreuse the ZILBRYSQ prefilled syringe. The prefilled syringe is for 1-time (single use) only. You may get an infection.
- Do notinject ZILBRYSQ more than 1 time per day.
- Do notmiss any doses of ZILBRYSQ. If you miss your ZILBRYSQ dose, inject a dose as soon as possible. Then, inject the next dose at your scheduled time. Do not inject more than 1 dose each day.
- Do notuse the ZILBRYSQ prefilled syringe if it has been dropped.
- Do notremove the needle cap from the ZILBRYSQ prefilled syringe until you are ready to inject.
- Do notinsert the needle into the skin more than 1 time because this may bend or break the needle, causing trauma to the tissue.
- Do notpull back on the ZILBRYSQ prefilled syringe plunger head at any time because this can break the prefilled syringe.
- Do nottouch the needle guard activation clips at any time because this can cause the early activation of the needle guard.
ZILBRYSQ Prefilled Syringe Guide to Parts (Figure A):
| Before use | |||
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| After use | |||
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| Figure A | |||
Preparing for Injection
Step 1: Take out the ZILBRYSQ prefilled syringe
If the ZILBRYSQ prefilled syringes are stored in the refrigerator:
- Take the ZILBRYSQ prefilled syringes carton out of the refrigerator and remove 1 prefilled syringe from the carton. Grasp the prefilled syringe body.Carefully lift the prefilled syringe straight up out of the tray (Figures B.1 and B.2). Put the rest of the prefilled syringes in the carton back in the refrigerator.
- Before you inject ZILBRYSQ, let the prefilled syringe warm up to room temperature on a clean flat surface for 30 to 45 minutes. This will help to reduce discomfort when injecting.
- Do not warm the ZILBRYSQ prefilled syringe in any other way (for example in a microwave, in hot water, or in direct sunlight).
- Do not remove the needle cap from the prefilled syringe until you are ready to inject.
If the ZILBRYSQ prefilled syringes are stored at room temperature:
- Remove 1 ZILBRYSQ prefilled syringe from the carton. Grasp the prefilled syringe body.Carefully lift the prefilled syringe straight up out of the tray ( Figures B.1 and B.2). Any remaining prefilled syringes in the carton should not be placed in the refrigerator after it has been stored at room temperature.
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| Figure B.1 | Figure B.2 |
Step 2: Inspect the ZILBRYSQ prefilled syringe
- Check the prefilled syringe for damage (Figure C).
- Do notuse if any part of the prefilled syringe appears to be cracked, leaking, or broken.
- Check thatthe needle cap is not cracked or broken and attached to the prefilled syringe (Figure C).
- Do notuse if the needle cap is missing or not securely attached.
- Check the expiration date and medicine name (ZILBRYSQ) on the prefilled syringe label (Figure C).
- Do notuse if the expiration date printed on the prefilled syringe has passed.
- Do notuse if the word ZILBRYSQ does not appear on the prefilled syringe.
- Check the dose appearing on the label (Figure C)and make sure it matches your prescribed dose.
- Do notuse if the dose does not match your prescribed dose.
- Check the medicine inside the prefilled syringe (Figure C). The medicine should be clear to almost clear and colorless. It is normal to see air bubbles in the prefilled syringe.
Do notuse if the medicine is cloudy, discolored, or contains floating particles.

Figure C
Step 3: Gather supplies
Wash your hands with soap and water and dry them with a clean towel.
Gather the following supplies on a clean, flat surface (Figure D):
- 1 ZILBRYSQ prefilled syringe
- 1 alcohol wipe (not supplied)
- 1 cotton ball or gauze pad (not supplied)
- 1 adhesive bandage (not supplied)
1 sharps disposal or puncture-resistant container (not supplied). See Step 12for instructions on throwing away the syringe.

Figure D
Step 4: Choose your injection site
Choose an injection site from the following areas (Figures E.1 and E.2):
- The stomach (abdomen), except for the 2-inch area around the belly button (navel) (Figure E.1)
The front of the thighs (Figure E.1)

Figure E.1 – abdomen and thighs
The back of the upper arms (only if someone else is giving you the injection) (Figure E.2)

Figure E.2 – upper arms
Choose a different site each time you give yourself an injection. If you want to use the same injection site, make sure it is at least 1-inch from a spot you used before.
Do notinject ZILBRYSQ into an area that is red, tender, bruised, swollen, hard or that has scars or stretch marks.
Step 5: Clean your injection site
Clean the injection site using an alcohol wipe (Figure F).
Let the skin dry for 10 seconds before injecting.
Do nottouch the injection site again before giving your injection.

Figure F
Injecting the Medicine
Step 6: Remove the needle cap
Hold the body of the ZILBRYSQ prefilled syringe with one hand and pull the needle cap straight off with your other hand (Figure G).

Figure G
Throw away (discard) the needle cap into your household trash or a sharps disposal container.
Do nottouch the needle or let it touch anything.
Do notrecap the needle at any time to avoid injury.
Do nottry to remove any air bubbles from the ZILBRYSQ prefilled syringe. Air bubbles will not affect your dose and will not harm you. This is normal. You can continue to take your injection.
Step 7: Pinch your injection site
Use your other hand to pinch the area of cleaned skin and hold it firmly (Figure H).

Figure H
Step 8: Insert the needle
Insert the entire needle into the pinched skin at a 45° to 90° angle. When the needle is fully inserted, hold the ZILBRYSQ prefilled syringe in place (Figure I).
Do notpull back on the plunger head at any time because this could break the prefilled syringe.
Do nottouch the needle guard activation clips.

Figure I
Step 9: Release the pinched skin
When the needle is fully inserted, hold the ZILBRYSQ prefilled syringe in place and release the pinched skin (Figure J).

Figure J
Do notreinsert the needle into the skin if the needle is pulled out when releasing the skin. If this happens, safely throw away (dispose of) the syringe in a sharps disposal container and get a new ZILBRYSQ prefilled syringe to give the injection.
Step 10: Inject the medicine
Push the plunger head all the way down while holding onto the finger grip to inject all the medicine (Figure K).

Figure K
Step 11: Release the plunger head
Slowly release the plunger head by lifting your thumb. After a complete injection, the needle guard will cover the needle and you may hear a click (Figure L).

Figure L
Step 12: Throw away (dispose of) the used ZILBRYSQ prefilled syringe
Throw away (dispose of) the used ZILBRYSQ prefilled syringe into a sharps disposal container (Figure M)right away.
Do notthrow away (dispose of) the ZILBRYSQ prefilled syringe in your household trash.
If you do not have an FDA-cleared sharps disposal container, you may use a household container that is:
- made of a heavy-duty plastic,
- can be closed with a tight-fitting, puncture-resistant lid, without sharps being able to come out,
- upright and stable during use,
- leak-resistant, and
- properly labelled to warn of hazardous waste inside the container.
Do notthrow away (dispose of) your used sharps disposal container in your household trash unless your community guidelines permit this.
Do notrecycle your used sharps disposal container.
Always keep the sharps disposal container out of the reach of children.
![]() | Note:When your sharps disposal container is almost full, you will need to follow your community guidelines for the right way to dispose of your sharps disposal container. There may be state or local laws about how you should throw away your used needles and syringes. For more information about safe sharps disposal, and for specific information about sharps disposal in the state you live in, go to the FDA's website at: http://www.fda.gov/safesharpsdisposal. | |
| Figure M |
Step 13: Examine the injection site
Press a cotton ball or gauze pad over the injection site and hold it for 10 seconds (Figure N).
Do notrub the injection site. You may have slight bleeding. This is normal. Apply an adhesive bandage if needed (Figure O).
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| Figure N | Figure O |
The injection is complete.
For more information or help, contact your healthcare provider.
If you have any questions, call UCBCares at 1-844-599-CARE (2273) or visit www.AskUCBCares.com.
Manufactured for:
UCB, Inc.
Smyrna, GA 30080
This Instructions for Use has been approved by the U.S. Food and Drug Administration.
Issued: 10/2023







