Engerix-B Side Effects

Fever, fatigue, and soreness at the injection site are some of the common side effects of Engerix-B. Most people tolerate the vaccine well; when side effects do occur, they tend to be minor. However, if you develop any serious problems after getting the vaccine, such as a high fever, a seizure, or difficulty breathing, tell your healthcare provider right away.

An Introduction to Engerix-B Side Effects

As with all vaccines, side effects are possible with Engerix-B® (hepatitis B vaccine). However, not everyone who receives the vaccination will have problems. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or are treated easily by you or your healthcare provider.
 
(This article covers many, but not all, of the possible side effects with this product. Your healthcare provider can discuss a more complete list of Engerix-B side effects with you.)
 

Common Side Effects of Engerix-B

Engerix-B has been studied thoroughly in clinical trials. In these studies, the side effects that occurred in a group of people given Engerix-B were documented and compared to those that occurred in a similar group of people given a placebo (an injection with no active ingredient). This way, it is possible to see what side effects occurred, how often they appeared, and how they compare to the group receiving the placebo.
 
In these studies, the most common side effects of Engerix-B included:
 
  • Injection site soreness -- in up to 22 percent of people
  • Fatigue -- up to 14 percent.
     
Other common side effects (occurring in 1 to 10 percent of people) included:
 
  • Dizziness
  • Headaches
  • Fever
  • Injection site redness, swelling, or lump.
     
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Engerix-B Vaccine Information

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