Side Effects of Xolair

Some of the most common Xolair side effects include reactions at the injection site, joint pain, and fatigue. While side effects of Xolair are mostly minor, it is possible, during treatment with Xolair, to develop serious problems that may require immediate medical attention. Among these more serious side effects that you should report to your healthcare provider right away are worsening of asthma or signs of an allergic reaction.

 

An Introduction to Side Effects of Xolair

As with any medicine, there are possible side effects with Xolair® (omalizumab). However, not everyone who takes Xolair will experience side effects. In fact, most people tolerate the medication well. When side effects do occur, in most cases they are minor and either require no treatment or can easily be treated by you or your healthcare provider.
 
(This article covers many, but not all, of the possible side effects with Xolair. Your healthcare provider can discuss a more complete list of Xolair side effects with you.)
 

Common Xolair Side Effects

Xolair has been studied thoroughly in clinical trials. In these studies, the side effects that occur in a group of people taking the drug are documented and are then compared to side effects that occur in another group of people not taking the medicine. As a result, it is possible to see what side effects occur, how often they appear, and how they compare to the group not taking the medicine.
 
In these studies, some of the most common side effects of Xolair included:
 
  • Injection site reactions (such as pain or redness at the injection site) -- in up to 45 percent of people
  • Joint pain -- up to 8 percent
  • Body pain -- up to 7 percent
  • Leg pain -- up to 4 percent
  • Fatigue -- up to 3 percent
  • Dizziness -- up to 3 percent.
     
Some other common side effects, occurring in 1 percent to 2 percent of people, included:
 
  • Broken bones
  • Arm pain
  • Earaches.
     
(Side Effects of Xolair Continued: Page 2)
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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;