How often are hepatitis A shots given?

Hepatitis A vaccination commonly follows a multi-dose schedule, with the interval chosen according to the product, age, and personal health needs. A clinician should confirm the dates for your specific vaccine and circumstances.

The first dose starts the immune response. A later dose strengthens and extends protection, which is why the course is planned over time rather than completed in one visit. Combination vaccines can follow a different schedule from hepatitis A vaccine alone. Travel dates, a recent exposure, immune conditions, and liver disease may change the advice.

Keep the dates of every dose together with your medical records. More detail is available in [Hepatitis A Vaccination](/treatments/preventive-care-and-vaccination/hepatitis-a-vaccination/) and [Hepatitis A](/conditions/hepatitis-a/).

Tell the clinic when you need protection, whether you have received a dose elsewhere, and whether you are unsure of the vaccine name. Do not restart a course on your own if a dose is late; the vaccinator can review the record and set the next date. Arrange travel vaccination early enough for the clinician to discuss your options.

Seek urgent help for breathing difficulty, facial or throat swelling, widespread hives, fainting, or sudden severe weakness after a dose. Contact a clinician for a reaction that is worsening or for symptoms that could indicate illness, such as yellow eyes, [Dark Urine](/symptoms/dark-urine/), persistent [Loss of Appetite](/symptoms/loss-of-appetite/), or ongoing [Nausea](/symptoms/nausea/). These symptoms should not be used to decide whether a dose is due.

Ask which vaccine you are receiving, how many visits your course requires, what interval applies, and what to do after a missed appointment. Ask whether your health history calls for a [Liver Function Test](/treatments/diagnostics-and-screening/liver-function-test/) or a modified plan.