Patient Leaflet Updated 20-Mar-2025 | SANOFI
Vaxigrip suspension for injection in pre-filled syringe
Vaxigrip®
suspension for injection in pre-filled syringe
Trivalent Influenza Vaccine
(split virion, inactivated)
1. What Vaxigrip is and what it is used for
2. What you need to know before you or your child use Vaxigrip
3. How to use Vaxigrip
4. Possible side effects
5. How to store Vaxigrip
6. Contents of the pack and other information
Vaxigrip is a vaccine.
This vaccine administered to you or your child from 6 months of age helps to protect you or your child against influenza (flu). When a person is given the vaccine Vaxigrip, the immune system (the body's natural defence system) will produce its own protection (antibodies) against the disease. When given during pregnancy the vaccine helps to protect the pregnant women but also helps to protect her baby from birth to less than 6 months of age through the transmission of protection from mother to baby during pregnancy (see also Sections 2 and 3).
None of the ingredients in the vaccine can cause flu.
The use of Vaxigrip should be based on official recommendations.
Flu is a disease that can spread rapidly and is caused by different types of strains that can change every year. Due to this potential change in circulating strains on a yearly basis, as well as the duration of protection intended by the vaccine, vaccination is recommended every year. The greatest risk of catching flu is during the cold months between October and March. If you or your child were not vaccinated in the autumn, it is still sensible to be vaccinated up until the spring since you or your child run the risk of catching flu until then. Your doctor will be able to recommend the best time to be vaccinated.
Vaxigrip is intended to protect you or your child against the three strains of virus contained in the vaccine from about 2 to 3 weeks after the injection.
In addition, if you or your child are exposed to flu immediately before or after your vaccination, you or your child could still develop the illness as the incubation period for flu is a few days. The vaccine will not protect you or your child against the common cold, even though some of the symptoms are similar to flu.
To make sure that Vaxigrip is suitable for you or your child, it is important to tell your doctor or pharmacist if any of the points below apply to you or your child. If there is anything you do not understand, ask your doctor or pharmacist to explain.
Talk to your doctor or pharmacist before using Vaxigrip.
You should tell your doctor before vaccination if you or your child have:
If you or your child have an acute illness with fever, the vaccination should be postponed until the fever is resolved.
Your doctor will decide if you or your child should receive the vaccine.
Fainting can occur (mostly in adolescents) following, or even before, any needle injection. Therefore tell your doctor or nurse if you or your child fainted with a previous injection.
As with all vaccines, Vaxigrip may not fully protect all persons who are vaccinated.
Not all babies less than 6 months of age born to pregnant women vaccinated during pregnancy will be protected.
Vaxigrip is not recommended for use in children below 6 months of age.
Tell your doctor or pharmacist if you or your child are receiving, have recently received or might receive any other vaccines or any other medicines.
If you are pregnant or breast-feeding, think you may be pregnant, ask your doctor or pharmacist for advice before using this medicine.
Vaxigrip can be used in all stages of pregnancy.
Vaxigrip may be used during breast-feeding.
Your doctor/pharmacist will be able to decide if you should receive Vaxigrip.
Vaxigrip has no or negligible influence on the ability to drive or use machines.
This medicine contains less than 1 mmol potassium (39 mg) and sodium (23 mg) per dose, i.e. essentially 'potassium-free' and 'sodium-free'.
Adults receive one 0.5 mL dose.
Children from 6 months to 17 years of age receive one 0.5 mL dose.
If your child is less than 9 years of age and has not been previously vaccinated against flu, a second dose of 0.5 mL should be given after at least 4 weeks.
If you are pregnant, one 0.5 mL dose given to you during pregnancy may protect your baby from birth to less than 6 months of age. Ask your doctor or pharmacist for more information.
Your doctor or nurse will administer the recommended dose of the vaccine as an injection into the muscle or under the skin.
In some cases, more than the recommended dose has been inadvertently administered.
In these cases, when side effects were reported, they were in line with what is described following the administration of the recommended dose (see Section 4).
If you have any further questions on the use of this product, ask your doctor or pharmacist.
Like all medicines, this vaccine can cause side effects, although not everybody gets them.
If you experience an allergic reaction, contact your doctor or healthcare professional immediately or go to the nearest hospital emergency room right away.
They can occur immediately after vaccine administration and may be life-threatening.
Symptoms may include:
Other symptoms may include:
These allergic reactions were reported as uncommon (may affect up to 1 in 100 people) to rare (may affect up to 1 in 1 000 people).
Very common (may affect more than 1 in 10 people):
(1) Common in elderly
Common (may affect up to 1 in 10 people):
(2) Uncommon in elderly
Uncommon (may affect up to 1 in 100 people):
(3) Rare in elderly (4) Rare in adults
Rare (may affect up to 1 in 1 000 people):
Very common (may affect more than 1 in 10 people):
(5) Common in children from 9 to 17 years old
Common (may affect up to 1 in 10 people):
Uncommon (may affect up to 1 in 100 people):
Very common (may affect more than 1 in 10 people):
(6) Rare in children from 24 to 35 months old
(7) Uncommon in children from 24 to 35 months old
(8) Rare in children from 6 to 23 months old
Common (may affect up to 1 in 10 people):
Rare (may affect up to 1 in 1 000 people):
In children from 6 months to 8 years of age who receive 2 doses, side effects are similar after the first and after the second dose. Fewer side effects may happen after the second dose in children from 6 to 35 months of age.
Most side effects usually occurred within the 3 days following vaccination and disappeared within 1 to 3 days without treatment. The intensity of most these side effects was mild to moderate.
The frequency of the following side effects is not known (cannot be estimated from the available data) in the whole population except in the population for which the side effect is listed above:
(9) Not reported in children from 6 to 35 months old
If you or your child get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Medicines and Healthcare products Regulatory Agency (MHRA) Yellow Card Scheme at www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects, you can help provide more information on the safety of this medicine.
Keep this vaccine 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 refers to the last day of that month.
Store in a refrigerator (2°C — 8°C). Do not freeze. Keep the syringe in the outer carton in order to protect from light.
Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.
The active substances are: Influenza virus (inactivated, split) of the following strains*:
Per 0.5 mL dose
* propagated in fertilised hens' eggs from healthy chicken flocks
** haemagglutinin
This vaccine complies with the WHO (World Health Organisation) recommendations (Northern hemisphere) and EU decision for the 2023/2024 season.
The other ingredients are: a buffer solution containing sodium chloride, disodium phosphate dihydrate, potassium dihydrogen phosphate, potassium chloride, water for injections.
Some components such as eggs (ovalbumin, chicken proteins), neomycin, formaldehyde or octoxinol-9 may be present in very small amounts (see Section 2).
The vaccine, after shaking gently, is a colourless opalescent liquid.
Vaxigrip is a suspension for injection presented in a pre-filled syringe of 0.5 mL, with attached needle, with separate needle or without needle, in box of 1 or 10. Not all pack sizes may be marketed.
The Marketing Authorisation Holder is:
The Manufacturer is:
This leaflet was last revised in 01/2025.
Sanofi, 410 Thames Valley Park Drive, Reading, Berkshire, RG6 1PT, UK
+44 (0)800 035 2525