Immunoglobulin (IG) for Hepatitis A

Immunoglobulin (IG) is a safe, inexpensive, and effective means of preventing the spread of hepatitis A virus (HAV) infection.

The sooner you get a shot of IG after being exposed to HAV, the greater the likelihood that infection will be prevented.

IG protection is only temporary, lasting about 3 months. If you are planning to stay longer than 3 months in an area where hepatitis A is a problem, you should receive a higher initial dose of IG. You should receive the same higher dose of IG every 3 to 5 months while you are still at risk. Or you could get the hepatitis A vaccine and then would not need to get hepatitis A IG.

IG is prepared from blood products obtained from paid donors. In the United States, no cases of transmission of the human immunodeficiency virus (HIV) or hepatitis B virus (HBV) through IG have been reported. The safety of IG prepared in countries other than the U.S. cannot be guaranteed.

Taking medicine

Medicine is one of the many tools your doctor has to treat a health problem. Taking medicine as your doctor suggests will improve your health and may prevent future problems. If you don't take your medicines properly, you may be putting your health (and perhaps your life) at risk.

There are many reasons why people have trouble taking their medicine. But in most cases, there is something you can do. For suggestions on how to work around common problems, see the topic Reference Taking Medicines as Prescribed.

Advice for women

If you are pregnant, breast-feeding, or planning to get pregnant, do not use any medicines unless your doctor tells you to. Some medicines can harm your baby. This includes prescription and over-the-counter medicines, vitamins, herbs, and supplements. And make sure that all your doctors know that you are pregnant, breast-feeding, or planning to get pregnant.

Checkups

Complete the new medication information form (PDF) (What is a Reference PDF Opens New Window document?) to help you understand this medication.

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