Asthma Home > Answers to Questions on Xolair

Overdose With Xolair

In previous studies, high doses of Xolair did not cause serious problems. Because your healthcare provider injects the Xolair dose, an overdose is unlikely to occur.

Storage Methods

Xolair will be stored at your healthcare provider's office. Once mixed, it may be kept in the refrigerator for up to eight hours or at room temperature for up to four hours before your injection. Because it takes at least 20 minutes for Xolair to dissolve, Xolair needs to be mixed beforehand.

What Should I Do If I Miss a Dose?

If you do not take your Xolair as scheduled, contact your healthcare provider to schedule your injection as soon as possible.


Xolair comes in 150 mg vials that must be mixed with sterile water for injection before each use.

Is There a Generic Version of Xolair?

Currently, there is no generic Xolair licensed for sale.
(Click Generic Xolair for more information.)
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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