Informational only — Not medical advice. Always consult a licensed healthcare provider.

Community data Updated 23 hours ago

Indications

Inactivated Hepatitis A vaccine is used to protect adults and children from 12 months of age against infection caused by the Hepatitis A virus, by building the body's own immunity (active immunization).

⚠️ Always consult a registered physician before taking any medicine.

Pharmacology

The hepatitis A virus belongs to the picornavirus family. It is one of several hepatitis viruses that cause disease throughout the body, with the damage showing up in the liver. The incubation period for hepatitis A averages 28 days (range: 15 to 50 days). The course of the infection varies a great deal, from no symptoms at all to icteric hepatitis and death. Antibodies to HAV protect against hepatitis A infection, but the lowest titer needed for protection has not been determined.

Pregnancy & Breastfeeding

A pregnant woman should be given the inactivated Hepatitis A vaccine only if it is clearly needed. For women who are breastfeeding, the vaccine should be used with caution.

⚠️ Talk to your doctor before taking any medicine during pregnancy or while breastfeeding.

Dosage Reference

⚠️ Reference ranges from official sources only. Consult your doctor for personalized dosing.

Adults: Give the Hepatitis A vaccine into the muscle only. Do not inject it into a vein. The primary immunization is two doses. The first dose is given on the date chosen, and the second dose follows 6 months later. Children 12 months to 15 years: the recommended dose is 0.5 ml. The first dose is given on the chosen date, and the second dose is given 6 months after the first. Children 16 years and above: the recommended dose is 1 ml. The first dose is given on the chosen date, and the second dose is given 6 months after the first.