FLUCELVAX Injectable Suspension in Pre-filled Syringe
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Introduction
Package Leaflet: Information for the User
Flucelvax Injectable Suspension in Pre-filled Syringe
Influenza Vaccine (Surface Antigen, Inactivated, Prepared in Cell Cultures)
Read all of this leaflet carefully before you start receiving this medicine because it contains important information for you.
- Keep this leaflet, you may need to read it again.
- If you have any further questions, ask your doctor, pharmacist, or nurse.
- If you experience any side effects, talk to your doctor, pharmacist, or nurse, even if they are not listed in this leaflet. See section 4.
Contents of the Package Leaflet
- What is Flucelvax and what is it used for
- What you need to know before you receive Flucelvax
- How Flucelvax is administered
- Possible side effects
- Storage of Flucelvax
- Contents of the pack and other information
1. What is Flucelvax and what is it used for
Flucelvax is an influenza vaccine. Flucelvax is prepared in cell cultures and therefore does not contain egg.
When a person receives the vaccine, the immune system (the body's natural defense system) will produce its own protection against the influenza virus. None of the vaccine components can cause influenza.
Flucelvax is used to prevent influenza in adults and children from 6 months of age.
The vaccine is directed against three strains of the influenza virus, following the recommendations of the World Health Organization for the 2025/2026 Campaign.
2. What you need to know before you receive Flucelvax
You should not receive Flucelvax
If you are allergic to:
- the active substances or any of the other components of this vaccine (listed in section 6).
- beta-propiolactone, cetrimide, or polysorbate 80, which are residues from the manufacturing process that may be present in minimal amounts.
Warnings and Precautions
Consult your doctor, pharmacist, or nurse before receiving Flucelvax.
BEFORE VACCINATION
- your doctor or nurse will check that medical treatment and adequate supervision are readily available in the rare event of an anaphylactic reaction (a severe allergic reaction with symptoms such as difficulty breathing, dizziness, weak and rapid pulse, and skin rash) after administration. This reaction can occur with Flucelvax, as with all injectable vaccines.
- you should inform your doctor if you have an acute illness with fever. Your doctor may decide to postpone your vaccination until the fever has resolved.
- you should inform your doctor if your immune system is compromised or if you are receiving treatment that affects it, for example, cancer medication (chemotherapy) or corticosteroids (see section "Other medicines and Flucelvax").
- you should inform your doctor if you have a bleeding problem or if you bruise easily.
- you may faint after injection with a needle, or even before, so inform your doctor or nurse if you have fainted previously with any injection.
As with all vaccines, Flucelvax may not protect all people who are vaccinated.
Children under 6 months
This vaccine is not currently recommended in children under 6 months, as safety and efficacy have not been established in this age group.
Other medicines and Flucelvax
Inform your doctor or nurse if you are using, have recently used, or might use any other medicines, including those obtained without a prescription, or if you have recently received any other vaccine.
Flucelvax can be administered at the same time as other vaccines.
Pregnancy and Breastfeeding
Pregnancy
If you are pregnant, think you may be pregnant, or plan to become pregnant, consult your doctor. Influenza vaccines can be administered during any trimester of pregnancy.
Breastfeeding
The use of Flucelvax during breastfeeding has not been studied. No effects on breastfed infants are expected. Flucelvax can be administered during breastfeeding.
Driving and using machines
Flucelvax has no or negligible influence on the ability to drive and use machines.
Flucelvax contains sodium and potassium
This vaccine contains less than 1 mmol of sodium (23 mg) per dose; this is essentially "sodium-free".
This vaccine contains potassium, less than 1 mmol (39 mg) per dose; this is essentially "potassium-free".
3. How Flucelvax is administered
Your doctor or nurse will administer Flucelvax as an injection into the muscle of the upper arm (deltoid muscle) or into the muscle of the upper and outer thigh in small children, depending on muscle size.
Adults and children from 6 months of age
A dose of 0.5 ml.
If your child is under 9 years of age and has never been vaccinated against influenza, a second dose should be administered at least 4 weeks later.
4. Possible side effects
As with all medicines, this vaccine can cause side effects, although not everybody gets them.
The following side effects have been reported during clinical trials and during general use:
Very serious side effects
Consult your doctor immediately or go to the emergency department of your nearest hospital if you experience the following side effect – you may need urgent medical attention or hospitalization:
- Difficulty breathing, dizziness, weak and rapid pulse, along with skin rash, which are symptoms of an anaphylactic reaction (a severe allergic reaction)
Serious side effects
Inform your doctor immediately if you experience any of the following side effects – you may need medical attention:
- You feel weak, have difficulty moving, or experience numbness or tingling in your limbs. These may be symptoms of Guillain-Barré Syndrome (GBS), an autoimmune disease caused by the body's immune system
- Extensive swelling of the limb where the vaccine was injected
Other side effects
Very common (may affect more than 1 in 10 people)
- Pain at the injection site, bruising, redness, and swelling or hardness at the injection site
- Headache
- Muscle pain
- Fatigue
- Loss of appetite
- Irritability (reported only in children from 6 months to <6 years)< li>
- Somnolence (reported only in children from 6 months to <6 years)< li>
- Changes in eating habits (reported only in children from 6 months to <6 years)< li>
- Fever (≥38°C)
- Diarrhea
In elderly patients, common side effects were hardness or swelling at the injection site, headache, muscle pain, and fatigue.
Bruising at the injection site was common in adults, elderly, and children from 9 to <18 years.< p>
Headache was common in the elderly.
Loss of appetite was common in adults, elderly, and children from 9 to <18 years.< p>
Fever was uncommon in adults and elderly and common in children from 4 to <18 years of age.< p>
Common (may affect up to 1 in 10 people)
- Nausea, vomiting, diarrhea
- Joint pain
- Chills
Vomiting was uncommon in elderly patients.
Frequency not known (cannot be estimated from the available data)
- Feeling of tingling and numbness (paresthesia)
- Generalized skin reactions including itching, hives, or non-specific skin rash
Reporting of side effects
If you experience any side effects, talk to your doctor, pharmacist, or nurse, even if they are not listed in this leaflet. You can also report side effects directly through the national reporting system listed in Appendix V. By reporting side effects, you can help provide more information on the safety of this medicine.
5. Storage of Flucelvax
Keep this medicine out of the sight and reach of children.
Do not use this vaccine after the expiry date which is stated on the label and carton after EXP. The expiry date is the last day of the month shown.
Store in a refrigerator (between 2°C and 8°C). Do not freeze.
Keep the pre-filled syringe in the outer packaging to protect it from light.
Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. This will help protect the environment.
6. Contents of the pack and other information
Composition of Flucelvax
- The active substances are surface antigens of the influenza virus (hemagglutinin and neuraminidase), inactivated, of the following strains*:
Strain similar to A/Wisconsin/67/2022 (H1N1)pdm09 (A/Georgia/12/2022, CVR-167)
15 micrograms HA**
Strain similar to A/District of Columbia/27/2023 (H3N2) (A/Victoria/800/2024, CVR-289) 15 micrograms HA**
Strain similar to B/Austria/1359417/2021 (Singapore/WUH4618/2021, wild type)
15 micrograms HA**
per 0.5 ml dose
……………………………………
grown in Madin Darby Canine Kidney (MDCK) cells (a special cell culture in which the influenza virus grows)
** hemagglutinin
This vaccine complies with the recommendation of the World Health Organization (WHO) (Northern Hemisphere) and with the EU recommendation for the 2025-2026 season.
- The other components are: sodium chloride, potassium chloride, magnesium chloride hexahydrate, disodium phosphate dihydrate, potassium dihydrogen phosphate, and water for injections (see section 2: Flucelvax contains sodium and potassium).
Appearance and packaging of the product
Flucelvax is an injectable suspension (injection) in a pre-filled syringe (ready-to-use syringe). Flucelvax is a transparent to slightly opalescent suspension.
Each individual syringe contains 0.5 ml of injectable suspension.
Flucelvax is available in packs of 1 pre-filled syringe with or without a needle or 10 pre-filled syringes with or without needles.
Not all pack sizes may be marketed.
Marketing authorization holder and manufacturer
Seqirus Netherlands B.V.
Paasheuvelweg 28
1105BJ Amsterdam
Netherlands
You can obtain further information on this medicine from the local representative of the marketing authorization holder.
Belgium/Belgique/Belgien Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 | Lithuania Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
| Luxembourg/Luxemburg Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
Czech Republic Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 | Hungary Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
Denmark Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 | Malta Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
Germany Seqirus GmbH Marburg Tel: 08003601010 | Netherlands Seqirus Netherlands B.V. Amsterdam Tel: +31 (0) 20 204 6900 |
Estonia Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 | Norway Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
| Austria Valneva Austria GmbH, Vienna Tel: +43 1 20620 2020 |
Spain Seqirus Spain S.L. Barcelona Tel 937 817 884 | Poland Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
France Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 | Portugal Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
Croatia Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 | Romania Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
Ireland Seqirus UK Limited Maidenhead Tel: +44 1628 641 500 | Slovenia Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
Iceland Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 | Slovakia Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
Italy Seqirus S.r.l. Siena Tel: +39 0577 096400 | Finland Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
| Sweden Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
Latvia Seqirus Netherlands B.V. Netherlands Tel: +31 (0) 20 204 6900 |
Date of last revision of this leaflet: 07/2025
Other sources of information
Detailed information on this medicine is available on the European Medicines Agency website: http://www.ema.europa.eu.
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This information is intended only for healthcare professionals:
Medical treatment and adequate supervision should always be readily available in case of an anaphylactic episode, which can rarely occur after vaccine administration.
Shake before use. After shaking, the normal appearance of the vaccine is a transparent to slightly opalescent suspension.
The vaccine should be inspected visually for particulate matter and color changes before administration. If particulate matter and/or any variation in physical appearance are observed, do not administer the vaccine.
- Country of registration
- Active substance
- Prescription requiredYes
- Manufacturer
- This information is for reference only and does not constitute medical advice. Always consult a licensed doctor before taking any medication. Oladoctor is not responsible for medical decisions based on this content.
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