What is Ixiaro: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Ixiaro overview

BRAND NAMES:

  • Ixiaro

Generic Names:

  • Ixiaro

Uses:

  • Prevents Japanese encephalitis.

Therapeutic Classes:

  • Vaccine

Forms:

  • Injectable

How it’s taken:

  • By injection

What is Ixiaro used for?

What form(s) does Ixiaro come in

  • Injectable

What are common Ixiaro doses?

  • Syringe 0.5ML of

Common Ixiaro prescriptions

  • Ixiaro
    0.5ml syringe

  • Ixiaro
    0.5ml of syringe

How to take Ixiaro

  • Injection routeYour doctor will prescribe your exact dose and tell you how often it should be given. This medicine is given as a shot into one of your muscles.

  • Injection routeA nurse or other health provider will give you this medicine.

  • This vaccine requires 2 doses that are given 28 days apart. It is very important that you receive the second dose of the vaccine at least 7 days before possible exposure, such as if you travel out of the country.

  • You might need a booster dose in the future if you travel or could be exposed to Japanese encephalitis again. A booster dose may be given if it has been more than 1 year since you completed the first 2-dose series.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • Missed dose: If you miss your appointment for the second shot, call your doctor to make another appointment as soon as possible.

  • Injection routeA nurse or other health provider will give you this medicine.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • Missed dose: If you miss your appointment for the second shot, call your doctor to make another appointment as soon as possible.

  • This vaccine requires 2 doses that are given 28 days apart. It is very important that you receive the second dose of the vaccine at least 7 days before possible exposure, such as if you travel out of the country.

  • Injection routeYour doctor will prescribe your exact dose and tell you how often it should be given. This medicine is given as a shot into one of your muscles.

  • You might need a booster dose in the future if you travel or could be exposed to Japanese encephalitis again. A booster dose may be given if it has been more than 1 year since you completed the first 2-dose series.

What to do if you miss a dose of Ixiaro

Ixiaro contraindications

  • This vaccine is not right for everyone. You should not receive it if you had an allergic reaction to Japanese encephalitis virus vaccine or protamine sulfate.

Ixiaro warnings

  • Tell your doctor if you are pregnant or breastfeeding, or if you have a bleeding disorder.

  • This vaccine may not protect everyone who receives it, such as people who have a weak immune system.

  • Japanese encephalitis is spread by mosquitoes. Prevent mosquito bites by using insect repellent and mosquito nets and wearing protective clothing when you are outside.

Ixiaro interactions

  • Some foods and medicines can affect how this vaccine works. Tell your doctor if you are using a medicine that weakens your immune system, including a steroid or cancer medicine.

  • This vaccine may not protect everyone who receives it, such as people who have a weak immune system.

  • Japanese encephalitis is spread by mosquitoes. Prevent mosquito bites by using insect repellent and mosquito nets and wearing protective clothing when you are outside.

Ixiaro side effects

Serious Side Effects

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Fast heartbeat

  • Irritability, fever

  • Muscle pain

  • Pain, redness, or tenderness where the shot was given

Less Serious Side Effects

  • Irritability, fever

  • Muscle pain

  • Diarrhea, nausea, vomiting, loss of appetite

  • Pain, redness, or tenderness where the shot was given

  • Headache