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Havrix Júnior

Active Ingredient:
Hepatitis A Virus (Inactivated ) Adsorbed On Aluminium Hydroxide Hydrated Produced On Human Diploid
Origin:
EU

Havrix Júnior (Hepatitis A Virus (Inactivated ) Adsorbed On Aluminium Hydroxide Hydrated Produced On Human Diploid)

Havrix Júnior is a hepatitis A vaccine containing inactivated hepatitis A virus adsorbed on aluminium hydroxide, produced on human diploid cells. It is supplied in an injectable form for intramuscular administration and is marketed in the European Union as a prescription product. The vaccine is designed to stimulate active immunity against hepatitis A virus infection. It is intended for use in children and adolescents according to national immunization schedules.

Manufacturer / TM Owner

Smith Kline & French Portuguesa-Produtos Farmaceuticos Lda

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Indications & Clinical Uses

Havrix Júnior is indicated for the prevention of hepatitis A virus infection in individuals who have not been previously immunized.

  • Primary prophylaxis for hepatitis A in children aged 1‑2 years.
  • Booster dose for persons previously vaccinated with a hepatitis A vaccine.
  • Use in outbreak settings to quickly establish herd immunity.
  • Administration before travel to regions where hepatitis A is endemic.
  • Inclusion in routine childhood immunization programs as recommended by health authorities.

Side Effects

The safety profile of Havrix Júnior reflects the typical reactions observed with inactivated viral vaccines.

Common

  • Mild pain at the injection site.
  • Redness or swelling at the injection site.
  • Low‑grade fever.
  • Headache.
  • Fatigue.

Serious

  • Allergic reactions such as urticaria or angioedema.
  • Anaphylaxis.
  • Seizures (rare).
  • Guillain‑Barré syndrome (very rare).
  • Persistent high fever.

Precautions & Warnings

Before administering Havrix Júnior, healthcare providers should consider several precautionary factors to ensure safe use.

  • Confirm no severe allergy to any vaccine component, especially aluminium salts.
  • Defer vaccination in individuals with a known hypersensitivity to hepatitis A virus antigens.
  • Assess the health status of immunocompromised patients; vaccine may be less effective.
  • Postpone vaccination in persons with acute moderate or severe illness.
  • Discuss pregnancy and breastfeeding status, as safety data are limited.
  • Review previous hepatitis A vaccination history to avoid unnecessary repeat dosing.

Avoid Interactions

Havrix Júnior may interact with other medical products, and certain combinations require attention.

Avoid

  • Concurrent administration of other live vaccines (e.g., measles, mumps, rubella) within 4 weeks.

Use with caution

  • Simultaneous receipt of other inactivated vaccines (e.g., diphtheria‑tetanus‑pertussis) may increase local reactions.
  • Immunoglobulin therapy given within 2 weeks before or after vaccination may reduce immune response.
  • Antipyretics taken prophylactically may mask fever, a common post‑vaccination sign.
  • Chronic corticosteroid therapy may diminish antibody production.

Frequently Asked Questions

Havrix Júnior is approved for use in children starting at 1 year of age and may be given to adolescents according to national immunization recommendations.

The standard primary series typically consists of two doses administered several months apart, but the exact schedule should follow local health authority guidelines.

Safety data in pregnancy are limited; vaccination should be considered only if the potential benefit outweighs any theoretical risk and after consultation with a healthcare professional.

The vaccine can be administered to immunocompromised individuals, but the immune response may be reduced; clinicians should assess each case individually.

Seek immediate medical attention; anaphylaxis requires prompt treatment with epinephrine and supportive care.

Prophylactic use of antipyretics is not recommended because it may mask typical post‑vaccination fever, which is a sign of the immune response.

Protection can persist for many years, often decades, but exact duration varies; booster doses may be recommended for long‑term travelers or outbreak control.

Yes, it can be given with other inactivated vaccines, though local reactions may be slightly more common; live vaccines should be spaced according to guidelines.

The vaccine should be stored in a refrigerator between 2 °C and 8 °C and protected from freezing; specific handling instructions are provided by the manufacturer.

A booster may be recommended for travelers who were vaccinated many years ago or who have specific risk factors; consult a travel health specialist.

Record the vaccine name, batch number, administration date, injection site, and any immediate adverse reactions in the patient’s medical record.

Contraindications include severe allergic reaction to a previous dose or any component of the vaccine, such as aluminium hydroxide.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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