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IMVANEX Injectable Suspension

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About the medicine

How to use IMVANEX Injectable Suspension

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This page provides general information and does not replace a doctor’s consultation. Always consult a doctor before taking any medication. Seek urgent medical care if symptoms are severe.

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Introduction

Package Leaflet: Information for the User

IMVANEX injectable suspension

Vaccine against smallpox and monkeypox (modified Ankara vaccinia virus)

This medicine is subject to additional monitoring, which will allow for the quick identification of new safety information. You can help by reporting any side effects you may get. The last section of section 4 will tell you how to report side effects.

Read all of this leaflet carefully before you receive this vaccine 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 or nurse.
  • If you get any side effects, talk to your doctor or nurse. This includes any possible side effects not listed in this leaflet. See section 4.

Contents of the pack

  1. What is IMVANEX and what is it used for
  2. What you need to know before you are given IMVANEX
  3. How IMVANEX is given
  4. Possible side effects
  5. Storing IMVANEX
  6. Contents of the pack and other information

1. What is IMVANEX and what is it used for

IMVANEX is a vaccine used to prevent smallpox, monkeypox, and disease caused by cowpox virus in adults and adolescents from 12 years of age.

When the vaccine is given to a person, the immune system (the body's natural defense system) produces its own protection in the form of antibodies against the smallpox virus, monkeypox virus, and cowpox viruses.

IMVANEX does not contain the smallpox virus (Variola) or the monkeypox virus or the cowpox viruses. It cannot cause or spread infection and disease caused by the smallpox virus, monkeypox virus, or cowpox viruses.

Doctor consultation

Not sure if this medicine is right for you?

Discuss your symptoms and treatment with a doctor online.

2. What you need to know before you are given IMVANEX

You should not receive IMVANEX:

  • if you are allergic or have previously suffered a sudden and potentially life-threatening allergic reaction to the active substance or any of the other ingredients of this medicine (listed in section 6) or to chicken proteins, benzonase, gentamicin, or ciprofloxacin, which may be present in the vaccine in very small amounts.

Warnings and precautions

Talk to your doctor or nurse before receiving IMVANEX:

  • if you have atopic dermatitis (see section 4).
  • if you have an HIV infection or any other disease or treatment that weakens the immune system.
  • if you are nervous about receiving the vaccine or have ever fainted after an injection with a needle.

The efficacy of IMVANEX in protecting against smallpox, monkeypox, and disease caused by cowpox virus has not been studied in humans.

In case of illness with high fever, your doctor will postpone vaccination until you are better. The presence of a minor infection, such as a cold, should not require postponement of vaccination, but consult your doctor or nurse first.

It is possible that IMVANEX may not fully protect all people who receive the vaccine.

Previous vaccination with IMVANEX may alter the skin response ("take") to subsequent smallpox vaccines with replicating viruses and cause reduced or absent take of these vaccines.

Other medicines or vaccines and IMVANEX

Tell your doctor or nurse if you are taking or have recently taken any other medicine or if you have recently received any other vaccine.

Pregnancy and breastfeeding

If you are pregnant or breastfeeding, think you may be pregnant, or are planning to have a baby, ask your doctor. The use of this vaccine is not recommended during pregnancy and breastfeeding. However, your doctor will assess whether the potential benefit of preventing smallpox, monkeypox, and disease caused by cowpox virus outweighs the potential risks to you and your baby.

Driving and using machines

No information is available on the effects of IMVANEX on the ability to drive or use machines. However, if you experience any of the side effects included in section 4, some of them may affect your ability to drive or use machines (e.g., dizziness).

IMVANEX contains sodium

This medicine contains less than 1 mmol of sodium (23 mg) per dose, which is essentially "sodium-free".

3. How IMVANEX is given

You can receive this vaccine whether or not you have been vaccinated against smallpox in the past.

Your doctor or nurse will inject the vaccine under your skin, preferably in the upper arm. It should not be injected into a blood vessel.

If you have never been vaccinated against smallpox, monkeypox, or cowpox viruses:

  • You will receive two injections.
  • The second injection will be given no less than 28 days after the first.
  • Make sure to complete the two-injection vaccination course.

If you have been previously vaccinated against smallpox, monkeypox, or cowpox viruses:

  • You will receive one injection.
  • If your immune system is weakened, you will receive two injections, and the second will be given no less than 28 days after the first.

If you miss an appointment for an IMVANEX injection

If you miss a scheduled injection, talk to your doctor or nurse and schedule another appointment.

If you have any other questions about the use of this vaccine, ask your doctor or nurse.

Medicine questions

Started taking the medicine and have questions?

Discuss your symptoms and treatment with a doctor online.

4. Possible side effects

Like all medicines, this vaccine can cause side effects, although not everybody gets them.

Serious side effects

Get in touch with a doctor or go immediately to the Emergency Department of the nearest hospital if you experience any of the following symptoms:

  • difficulty breathing
  • dizziness
  • swelling of the face and neck

These symptoms may be indicative of a severe allergic reaction.

Other side effects

If you already have atopic dermatitis, you may experience more intense local skin reactions (such as redness, swelling, and itching) and other general symptoms (such as headache, muscle pain, nausea, or fatigue), as well as an exacerbation or worsening of your skin problem.

The most frequently reported side effects occurred at the injection site. Most were mild to moderate and resolved without treatment within a period of seven days.

Tell your doctor if you experience any of the following side effects:

Very common(may affect more than 1 in 10 people):

  • headache
  • muscle pain
  • nausea
  • fatigue
  • pain, redness, swelling, induration, or itching at the injection site

Common(may affect up to 1 in 10 people):

  • chills
  • fever
  • joint pain, limb pain
  • loss of appetite
  • lump, discoloration, bruising, or warmth at the injection site

Uncommon(may affect up to 1 in 100 people):

  • nose and throat infection, upper respiratory tract infection
  • swelling of the lymph nodes
  • sleep disorders
  • dizziness, abnormal skin sensations
  • muscle stiffness
  • sore throat, nasal discharge, cough
  • diarrhea, vomiting
  • rash, itching, skin inflammation
  • bleeding, irritation
  • swelling under the arm, feeling unwell, flushing, chest pain
  • increased cardiac laboratory values (such as troponin I), increased liver enzymes, decreased white blood cell count, decreased platelet volume

Rare(may affect up to 1 in 1,000 people):

  • sinus infection
  • flu
  • redness and discomfort in the eye
  • hives (urticaria)
  • skin discoloration
  • sweating
  • skin bruising
  • night sweats
  • skin lump
  • back pain
  • neck pain
  • muscle cramps
  • muscle pain
  • muscle weakness
  • swelling of the ankles, feet, or toes
  • rapid heartbeat
  • ear and throat pain
  • abdominal pain
  • dry mouth
  • feeling of spinning (vertigo)
  • migraine
  • nervous disorder that causes weakness, numbness, or tingling
  • drowsiness
  • flaking, inflammation, abnormal sensation in the skin, reaction at the injection site, rash, numbness, dryness, reduced mobility, blisters at the injection site
  • weakness
  • pseudoinfluenza syndrome
  • swelling of the face, mouth, and throat
  • increased white blood cell count
  • bruising

Frequency not known(cannot be estimated from the available data):

  • temporary facial paralysis (Bell's palsy) on one side

Reporting of side effects

If you experience any side effects, talk to your doctor or nurse. This includes any possible side effects 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. Storing IMVANEX

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 after EXP. The expiry date is the last day of the month shown.

Store in a freezer (at -20°C ± 5°C or -50°C ± 10°C or -80°C ± 10°C). The expiry date depends on the storage temperature. Do not re-freeze the vaccine once thawed. After thawing, the vaccine can be stored between 2°C and 8°C in the dark for a maximum of 2 months, within the approved validity period, before use.

Store in the original package to protect from light.

6. Contents of the pack and other information

What is in IMVANEX

One dose (0.5 ml) contains:

  • The active substance is the modified Ankara vaccinia virus - Bavarian Nordic1, at least 5 x 10^7 IU.*
  • infectious units

1 Produced in chicken embryo cells.

  • The other ingredients are: trometamol, sodium chloride, and water for injections.

This vaccine contains residual traces of chicken proteins, benzonase, gentamicin, and ciprofloxacin.

Appearance and packaging

After thawing, IMVANEX is a milky white to pale yellow injectable suspension.

IMVANEX is supplied as an injectable suspension in a vial (0.5 ml).

IMVANEX is available in packs of 1 vial or 20 vials.

Not all pack sizes may be marketed.

Marketing authorisation holder and manufacturer

Marketing authorisation holder

Bavarian Nordic A/S

Philip Heymans Allé 3

DK-2900 Hellerup

Denmark

Phone +45 3326 8383

Email [email protected]

Manufacturer

Bavarian Nordic A/S

Hejreskovvej 10A,

3490 Kvistgaard

Denmark

Date of last revision of this leaflet:

This medicine has been authorised under exceptional circumstances. This means that due to the rarity of this disease, it has not been possible to obtain complete information on this medicine.

The European Medicines Agency will review any new information that may become available every year and this leaflet will be updated as necessary.

More detailed information on this medicine is available on the European Medicines Agency web site: http://www.ema.europa.eu.

The leaflet is also available in all languages of the European Union/European Economic Area on the European Medicines Agency web site.

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This information is intended for healthcare professionals only:

Instructions for preparation and administration of the vaccine:

The vial should be allowed to reach a temperature between 8°C and 25°C before use. Shake gently before use. Visually inspect the suspension before administration. If particles or an abnormal appearance are observed, the vaccine should be discarded.

Each vial is for single use.

Draw up a dose of 0.5 ml into a syringe for injection.

After thawing, the vaccine can be stored between 2°C and 8°C in the dark for a maximum of 2 months, within the approved validity period, before use.

Do not re-freeze the vaccine once thawed.

In the absence of compatibility studies, this vaccine must not be mixed with other vaccines.

Online doctors for IMVANEX Injectable Suspension

Discuss questions about IMVANEX Injectable Suspension, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

5.0 (2)
Doctor

Svetlana Kolomeeva

Cardiology 18 years exp.

Dr. Svetlana Kolomeeva is a general practitioner and internal medicine doctor providing online consultations for adults. She helps patients manage acute symptoms, chronic conditions, and preventive care. Her clinical focus includes cardiovascular health, hypertension control, and managing symptoms like fatigue, weakness, sleep issues, and overall low energy.

Patients commonly seek her help for:

  • High blood pressure, headaches, dizziness, swelling, palpitations.
  • Diagnosis and management of hypertension, arrhythmias, and tachycardia.
  • Metabolic syndrome, excess weight, high cholesterol.
  • Chronic fatigue, insomnia, poor concentration, anxiety.
  • Respiratory symptoms: colds, flu, sore throat, cough, fever.
  • Digestive issues: heartburn, bloating, constipation, IBS symptoms.
  • Chronic conditions: diabetes, thyroid disorders.
  • Interpretation of lab tests and medical reports, therapy adjustment.
  • Second opinion and decision-making support.
  • Cardiovascular disease prevention and metabolic risk reduction.
  • Long-term follow-up and dynamic health monitoring.

Dr Kolomeeva combines clinical expertise with personalised care. She clearly explains diagnoses, guides patients through symptoms and treatment options, and provides actionable plans. Her consultations are designed not only to address current complaints but also to stabilise chronic conditions and prevent future complications. She supports patients through every stage of care – from first symptoms to ongoing health management.

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€55
5.0 (77)
Doctor

Sergey Ilyasov

Psychiatry 7 years exp.

Dr Sergey Ilyasov is an experienced neurologist and qualified psychiatrist who provides online consultations for adults and adolescents. Combining deep neurological expertise with a modern psychiatric approach, he ensures comprehensive diagnostics and effective treatment for a wide range of conditions affecting both physical and mental health.

Dr. Ilyasov helps patients in the following cases:

  • Chronic headaches (migraine, tension-type headache), back pain, neuropathic pain, dizziness, numbness in limbs, coordination disorders.
  • Anxiety disorders (panic attacks, generalized anxiety disorder), depression (including atypical and treatment-resistant forms), sleep disturbances (insomnia, hypersomnia, nightmares), stress, burnout.
  • Chronic pain syndromes and psychosomatic symptoms (e.g., irritable bowel syndrome related to stress, vegetative-vascular dystonia).
  • Behavioral disorders and concentration difficulties in adolescents (including ADHD, autism spectrum disorders), nervous tics.
  • Memory impairments, phobias, obsessive-compulsive disorder (OCD), emotional swings, and support for post-traumatic stress disorder (PTSD).

Thanks to his dual specialization in neurology and psychiatry, Dr Sergey Ilyasov offers integrated and evidence-based care for complex conditions requiring a multidisciplinary approach. His consultations focus on accurate diagnosis, development of an individualized treatment plan (including pharmacotherapy and psychotherapeutic methods), and long-term support adapted to each patient's unique needs.

Book an online consultation with Dr. Sergey Ilyasov to receive qualified assistance and improve your well-being today.

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€89
5.0 (137)
Doctor

Taisiia Proida

Psychiatry 7 years exp.

Dr. Taisiia Proida is a psychiatrist and cognitive behavioural therapist (CBT), and a member of the European Psychiatric Association. She offers online consultations for adults aged 18 and over, combining evidence-based medicine with an individualised approach to mental health care.

She specialises in consultations and ongoing support for a wide range of mental health concerns, including:

  • Mood disorders: depression, bipolar disorder, postpartum depression.
  • Anxiety disorders: generalised anxiety, OCD, panic attacks, phobias.
  • Post-traumatic stress disorder (PTSD) and complex PTSD.
  • Attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD). Assessment is provided only after an initial psychiatric evaluation and during a follow-up appointment.
  • Personality disorders and emotional instability.
  • Cyclothymia and mood fluctuations.
  • Schizophrenia spectrum and related conditions.

Dr. Proida combines clinical expertise with an empathetic approach, offering structured support based on evidence-based practices. Her work integrates CBT techniques with medical management, with a focus on anxiety and depressive disorders.

She works with clients from different countries and cultural backgrounds, adapting her communication style and recommendations to individual needs. With experience in international clinical trials (Pfizer, Merck), she values clarity, trust, and collaborative partnership in patient care.

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€120
5.0 (2)
Doctor

Alexander Nazarchuk

Allergology 7 years exp.

Dr. Alexander Nazarchuk is a physician specialising in allergology and internal medicine. He provides online consultations for adults, following the principles of evidence-based medicine — no outdated treatments or unnecessary tests, with clear explanations and a personalised approach. He helps patients with a wide range of allergic and therapeutic conditions, from common day-to-day complaints to complex cases involving allergies, gastrointestinal issues, cardiovascular concerns, respiratory symptoms, and more.

You can consult Dr. Nazarchuk for:

  • Test interpretation and guidance on diagnostic plans.
  • Allergic rhinitis, hay fever, bronchial asthma (including severe cases).
  • Food and drug allergies, skin rashes, angioedema.
  • Atopic dermatitis, urticaria, contact allergies.
  • Allergen-specific immunotherapy (AIT) – initiation and ongoing management.
  • Abdominal pain, bloating, changes in bowel habits, nausea, heartburn.
  • High blood pressure and adjustment of baseline antihypertensive therapy.
  • Hyperlipidaemia and elevated cholesterol.
  • Cough, nasal congestion, fever, sore throat.
  • Anaemia, including iron deficiency and related conditions.
  • Other issues related to allergology and internal medicine.

During consultations, Dr. Nazarchuk takes a thorough, structured approach — analysing symptoms, identifying potential causes, and helping patients make informed decisions. Whether treatment, further investigation, or monitoring is needed, he explains each step clearly so you understand your health and how best to manage it.

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€55

Frequently Asked Questions

Is a prescription required for IMVANEX Injectable Suspension?
IMVANEX Injectable Suspension requires a prescription in Spain. You can check with a doctor online whether this medicine may be appropriate for your situation.
Who manufactures IMVANEX Injectable Suspension?
IMVANEX Injectable Suspension is manufactured by Bavarian Nordic A/S. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of IMVANEX Injectable Suspension online?
Doctors such as Family doctors, Psychiatrists, Dermatologists, Cardiologists, Endocrinologists, Gastroenterologists, Pulmonologists, Nephrologists, Rheumatologists, Hematologists, Infectious disease physicians, Allergists, Geriatricians, Paediatricians, Oncologists may assess whether IMVANEX Injectable Suspension is appropriate, depending on your situation and local regulations. You can book an online consultation to discuss your symptoms and possible next steps.
What are the alternatives to IMVANEX Injectable Suspension?
Other medicines with the same active substance () include ABRYSVO powder and solvent for injectable solution, AREXVY powder and suspension for injectable suspension, MRESVIA DISPERSION INJECTABLE IN PRE-FILLED SYRINGE. These may have different brand names or formulations but contain the same therapeutic ingredient. Always consult a doctor before switching or starting a new medicine.
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