Bg pattern

SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION

Prescription review online

Prescription review online

A doctor will review your case and decide whether a prescription is medically appropriate.

Talk to a doctor about this medicine

Talk to a doctor about this medicine

Discuss your symptoms and possible next steps in a quick online consultation.

This page is for general information. Consult a doctor for personal advice. Call emergency services if symptoms are severe.
About the medicine

How to use SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION

Translated with AI

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.

Show original

Introduction

Package Leaflet: Information for the User

Synagis 50 mg/0.5ml solution for injection

Synagis 100 mg/1 ml solution for injection

Active substance: palivizumab

Read all of this leaflet carefully before your child is given this medicine because it contains important information for you and your child

  • Keep this leaflet, you may need to read it again.
  • If you have any further questions, ask your doctor or pharmacist.
  • If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. See section 4.

Contents of thepackage leaflet:

  1. What is Synagis and what is it used for
  2. What you need to know before your child is given Synagis
  3. How Synagis will be given to your child
  4. Possible side effects
  5. Storage of Synagis
  6. Contents of the pack and further information

1. What is Synagis and what is it used for

Synagis contains the active substance palivizumab, a monoclonal antibody that acts specifically against the respiratory syncytial virus (RSV).

Your child is at high risk of contracting a respiratory syncytial virus (RSV) infection.

Children who are more susceptible to contracting severe RSV disease (high-risk children) include premature babies (born at 35 weeks gestation or less) or babies with certain heart or lung problems.

Synagis is a medicine used to protect your child against this serious RSV disease.

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 your child is given Synagis

Your child must not be given Synagis

If they are allergic to palivizumab or any of the other ingredients of this medicine (listed in section 6). The signs and symptoms of a severe allergic reaction may include:

  • severe rash, hives or itching of the skin
  • swelling of the lips, tongue, and face
  • closure of the throat, difficulty swallowing
  • blue discoloration of the skin, lips, or under the nails
  • muscle weakness or floppiness
  • drop in blood pressure
  • loss of consciousness

Warnings and precautions

Be careful with Synagis

Other medicines and Synagis

No interactions have been observed between Synagis and other medicines. However, before administration of Synagis, inform your doctor or pharmacist of all the medicines your child is taking.

3. How Synagis will be given to your child

How often will Synagis be given to your child?

Synagis should be administered in doses of 15 mg/kg of body weight, once a month during the time when there is a risk of RSV infection. For the best protection of your child, it is necessary to follow the doctor's instructions on when to receive the next doses of Synagis.

If your child undergoes heart surgery (surgical intervention with extracorporeal circulation), an additional dose of Synagis will be administered after the surgery. The initial injection program will then be continued.

How will your child receive Synagis?

Synagis should be administered to your child by injection into the muscle, normally in the outer part of the thigh.

What should you do if a dose of Synagis is missed?

If a dose is missed, you should talk to your child's doctor as soon as possible. Each Synagis injection can protect your child for about a month before another dose is needed.

Follow exactly the administration instructions given by your doctor or pharmacist. If you are in doubt about how this medicine will be administered to your child, consult your doctor or pharmacist.

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 medicine can cause side effects, although not everybody gets them.

Synagis may cause serious side effects including:

  • severe allergic reactions (such reactions can be life-threatening or fatal (see “Your child must not be given Synagis” for a list of signs and symptoms).
  • unusual bruising or clusters of small red spots on the skin.

Tell your doctor or seek medical help immediately if your child experiences any of the serious side effects listed above after receiving a dose of Synagis.

Additional side effects

Very common (at least 1 in 10 patients):

  • rash
  • fever

Common (between 1 and 10 in 100 patients):

  • pain, redness, or swelling at the injection site
  • pauses in breathing or other breathing difficulties

Uncommon (less than 1 in 100 patients):

  • seizures
  • hives

Reporting of side effects

If your child experiences any side effects, talk to your doctor, even if they are not listed in this leaflet. You can also report side effects directly via 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 Synagis

Keep this medicine out of the sight and reach of children.

Do not use this medicine 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 refrigerator (between 2°C and 8°C).

Do not freeze.

Keep the vial in the original package to protect it from light.

6. Contents of the pack and further information

Composition of Synagis

  • The active substance is palivizumab, 1 ml of Synagis solution for injection contains 100 mg of palivizumab.
  • Each 0.5 ml vial contains 50 mg of palivizumab.
  • Each 1 ml vial contains 100 mg of palivizumab.
  • The other ingredients are histidine, glycine, and water for injections.

Appearance and pack size

Synagis solution for injection is a clear and slightly opalescent solution and is available in 0.5 ml or 1 ml vials.

Pack size of 1.

Marketing authorisation holder

AstraZeneca AB

SE 151 85 Södertälje

Sweden

Manufacturer

AbbVie S.r.l.

04011 Campoverde di Aprilia (LT)

Italy

You can request more information about this medicine from the local representative of the marketing authorisation holder:

België/Belgique/Belgien

AstraZeneca S.A./N.V.

Tel: +32 2 370 48 11

Lietuva

UAB AstraZeneca Lietuva

Tel: +370 5 2660550

България

АстрАЗенека Фармасютикалс ЕООД

Тел.: +359 2 44 55 000

Luxembourg/Luxemburg

AstraZeneca S.A./N.V.

Tél/Tel: +32 2 370 48 11

Česká republika

AstraZeneca Czech Republic s.r.o

Tel: +420 222 807 111

Magyarország

AstraZeneca Kft.

Tel.: +36 1 883 6500

Danmark

AstraZeneca A/S

Tlf: +45 43 66 64 62

Malta

Associated Drug Co. Ltd

Tel: +356 2277 8000

Deutschland

AstraZeneca GmbH

Tel: +49 40 809034100

Nederland

AstraZeneca BV

Tel: 31 85 808 9900

Eesti

AstraZeneca

Tel: +372 6549 600

Norge

AstraZeneca AS

Tlf: +47 21 00 64 00

Ελλάδα

AstraZeneca A.E.

Τηλ: +30 2 106871500

Österreich

AstraZeneca Österreich GmbH

Tel: +43 1 711 31 0

España

AstraZeneca Farmacéutica Spain, S.A.

Tel: +34 91 301 91 00

Polska

AstraZeneca Pharma Poland Sp. z o.o.

Tel.: +48 22 245 73 00

France

AstraZeneca

Tél: +33 1 41 29 40 00

Portugal

AstraZeneca Produtos Farmacêuticos, Lda.

Tel: +351 21 434 61 00

Hrvatska

AstraZeneca d.o.o.

Tel: +385 1 4628 000

România

AstraZeneca Pharma SRL

Tel: +40 21 317 60 41

Ireland

AstraZeneca Pharmaceuticals (Ireland) DAC

Tel: +353 1609 7100

Slovenija

AstraZeneca UK Limited

Tel: +386 1 51 35 600

Ísland

Vistor hf.

Sími: +354 535 7000

Slovenská republika

AstraZeneca AB, o.z.

Tel: +421 2 5737 7777

Italia

AstraZeneca S.p.A.

Tel: +39 02 00704500

Suomi/Finland

AstraZeneca Oy

Puh/Tel: +358 10 23 010

Κύπρος

Αλκίτωρ Φαρμακευτική Λτδ

Τηλ: +357 22490305

Sverige

AstraZeneca AB

Tel: +46 8 553 26 000

Latvija

SIA AstraZeneca Latvija

Tel: +371 67377100

United Kingdom(Northern Ireland)

AstraZeneca UK Ltd

Tel: +44 1582 836 836

Date of last revision of this leaflet:

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

------------------------------[perforation to separate from patient information]-------------------

This information is intended only for healthcare professionals:

Instructions for administration

In order to improve the traceability of biological medicinal products, the name and batch number of the administered product should be clearly recorded.

Palivizumab should not be mixed with any other medicinal product or diluent.

Both the 0.5 ml and 1 ml vials contain an overfill to allow for the withdrawal of 50 mg or 100 mg, respectively.

Do not dilute the product.

Do not shake the vial.

To administer, remove the portion of the flip-off cap from the vial and clean the stopper with ethanol 70% or equivalent. Insert the needle into the vial and withdraw into the syringe the appropriate volume of solution. Palivizumab solution for injection does not contain preservatives, is for single use, and should be administered immediately after the dose has been drawn into the syringe.

Disposal of unused medicinal product or waste material should be in accordance with local requirements.

Palivizumab is administered once a month by intramuscular injection, preferably in the anterolateral aspect of the thigh. The gluteal muscle should not be used routinely as an injection site due to the risk of injury to the sciatic nerve. The injection should be administered using a standard aseptic technique. Volumes of injection greater than 1 ml should be administered in divided doses.

When using palivizumab 100 mg/1 ml, the volume of palivizumab (expressed in ml) to be administered once a month = (patient's weight in kg) multiplied by 0.15.

For example, the calculation for a baby weighing 3 kg:

(3 x 0.15) ml = 0.45 ml of palivizumab per month.

Online doctors for SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION

Discuss questions about SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

5.0 (69)
Doctor

Tarek Agami

General medicine 11 years exp.

Dr. Tarek Agami is a general practitioner registered in both Portugal and Israel, with broad experience in family and preventive medicine. He offers online consultations for adults and children, providing personalised support for primary care needs, chronic disease management, and everyday health concerns.

Dr. Agami received clinical training and worked in leading medical institutions in Israel (Kaplan Medical Center, Barzilai Medical Center, Wolfson Medical Center) and Portugal (European Healthcare City, Viscura Internacional, Hospital Dr. José Maria Grande, Hospital Vila Franca de Xira). His approach combines international medical standards with individualised attention to each patient.

Main areas of consultation:

  • Diagnosis and treatment of acute and chronic conditions (high blood pressure, diabetes, respiratory infections, cardiovascular symptoms)
  • Evaluation of symptoms and guidance on further diagnostic testing
  • Preventive check-ups and regular health monitoring
  • Medical support during travel or after relocation
  • Treatment adjustments and lifestyle recommendations based on your personal history
Dr. Agami provides medical support for patients using GLP-1 medications (such as Ozempic or Mounjaro) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Portugal and Israel.

Dr. Agami is committed to evidence-based, patient-centred care, ensuring that each person receives trusted medical support tailored to their health goals.

Camera Book a video appointment
€69
5.0 (63)
Doctor

Nuno Tavares Lopes

Family medicine 18 years exp.

Dr. Nuno Tavares Lopes is a licensed physician in Portugal with 17 years of experience in emergency medicine, family and general practice, and public health. He is the Director of Medical and Public Health Services at an international healthcare network and serves as an external consultant for the WHO and ECDC.

  • Emergency care: infections, fever, chest/abdominal pain, minor injuries, paediatric emergencies
  • Family medicine: hypertension, diabetes, cholesterol, chronic disease management
  • Travel medicine: pre-travel advice, vaccinations, fit-to-fly certificates, travel-related illnesses
  • Sexual and reproductive health: PrEP, STD prevention, counselling, treatment
  • Weight management and wellness: personalised weight loss programmes, lifestyle guidance
  • Skin and ENT issues: acne, eczema, allergies, rashes, sore throat, sinusitis
  • Pain management: acute and chronic pain, post-surgical care
  • Public health: prevention, health screenings, long-term monitoring
  • Sick leave (Baixa médica) connected to Segurança Social in Portugal
  • IMT medical certificates for driving licence exchange
Dr. Nuno Tavares Lopes provides medical support for patients using GLP-1 medications (Mounjaro, Wegovy, Ozempic, Rybelsus) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Europe.

Dr. Lopes also provides interpretation of medical tests, follow-up care for complex patients, and multilingual support. Whether for urgent concerns or long-term care, he helps patients act with clarity and confidence.

Camera Book a video appointment
€59
5.0 (17)
Doctor

Anastasiia Shalko

Family medicine 13 years exp.

Dr. Anastasiia Shalko is a general practitioner with a background in both paediatrics and general medicine. She graduated from Bogomolets National Medical University in Kyiv and completed her paediatric internship at the P.L. Shupyk National Medical Academy of Postgraduate Education. After working as a paediatrician in Kyiv, she relocated to Spain, where she has been practising general medicine since 2015, providing care for both adults and children.

Her work focuses on urgent, short-term medical concerns – situations where patients need quick guidance, symptom assessment and clear next steps. She helps people understand whether their symptoms require in-person evaluation, home management or a change in treatment. Common reasons for booking an online consultation include:

  • acute respiratory symptoms (cough, sore throat, runny nose, fever)
  • viral illnesses such as colds and seasonal infections
  • gastrointestinal complaints (nausea, diarrhoea, abdominal pain, gastroenteritis)
  • sudden changes in how a child or adult feels
  • questions about existing treatment and whether adjustments are needed
  • renewal of prescriptions when clinically appropriate
Dr. Shalko works specifically with urgent and short-term problems, providing practical recommendations and helping patients determine the safest next step. She explains symptoms clearly, guides patients through decision-making and offers straightforward medical advice for everyday acute issues.

She does not provide long-term management of chronic conditions, ongoing follow-up or comprehensive care plans for complex long-term illnesses. Her consultations are designed for acute symptoms, sudden concerns and situations where timely medical input is important.

With clinical experience in both paediatrics and general medicine, Dr. Shalko confidently supports adults and children. Her communication style is clear, simple and reassuring, helping patients feel informed and supported throughout the consultation.

Camera Book a video appointment
€50
5.0 (3)
Doctor

Tomasz Grzelewski

Dermatology 21 years exp.

Dr Tomasz Grzelewski is an MD, PhD specialist in allergy, paediatrics, general practice and sports medicine, with a clinical focus on dermatology, endocrinology, allergology and sports-related health. He has more than 20 years of clinical experience and completed his medical training at the Medical University of Łódź, where he defended his PhD thesis with distinction. His doctoral research was recognised by the Polish Society of Allergology for its innovative contribution to the field. Throughout his career, he has gained extensive expertise in diagnosing and managing a wide range of allergic and paediatric conditions, including modern allergen desensitisation techniques.

For five years, Dr Grzelewski served as the Head of two paediatric departments in Poland, managing complex clinical cases and leading multidisciplinary teams. He also worked in medical centres in the United Kingdom, gaining experience across both primary care and specialist environments. With over a decade of telemedicine experience, he has provided online consultations across Europe and is valued for his clear, structured and evidence-based medical guidance.

Dr Grzelewski is actively involved in clinical programmes focused on modern anti-allergic therapies. As a Principal Investigator, he leads research projects on sublingual and oral allergen desensitisation, supporting evidence-based progress in allergy treatment for both children and adults.

In addition to his background in allergology and paediatrics, he completed dermatology studies through the Cambridge Education Group (Royal College of Physicians of Ireland) and a Clinical Endocrinology course at Harvard Medical School. This advanced training enhances his ability to manage skin manifestations of allergies, atopic conditions, urticaria, endocrine-related symptoms and complex immunological reactions.

Patients commonly seek his care for:

  • seasonal and perennial allergies
  • allergic rhinitis and chronic nasal symptoms
  • asthma and breathing difficulties
  • food and medication allergies
  • urticaria, atopic dermatitis and skin reactions
  • recurrent infections in children
  • sports-related health questions
  • general family medicine concerns
Dr Tomasz Grzelewski is known for his clear communication style, structured medical approach and ability to explain treatment options in a concise and accessible way. His multidisciplinary background across allergy, paediatrics, dermatology and endocrinology allows him to provide safe, up-to-date and comprehensive care for patients of all ages.
Camera Book a video appointment
€80

Frequently Asked Questions

Is a prescription required for SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION?
SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION requires a prescription in Spain. You can check with a doctor online whether this medicine may be appropriate for your situation.
What is the active substance in SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION?
The active ingredient in SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION is palivizumab. This information helps identify medicines with the same composition but different brand names.
Who manufactures SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION?
SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION is manufactured by Astrazeneca Ab. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION 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 SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION 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 SYNAGIS 100 mg/1 ml INJECTABLE SOLUTION?
Other medicines with the same active substance (palivizumab) include SYNAGIS 50 mg/0.5 ml INJECTABLE SOLUTION, BEYFORTUS 100 mg injectable solution in pre-filled syringe, BEYFORTUS 50 mg Injectable Solution 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.
bg-pattern-dark

Stay informed about Oladoctor

News about new services, product updates and useful information for patients.

Follow us on social media