Allergies Home > Xyzal Drug Interactions

When ritonavir or theophylline is taken with Xyzal, drug interactions may occur. These interactions can increase the level of Xyzal in your blood, possibly increasing your risk of side effects. To prevent Xyzal drug interactions from occurring, your healthcare provider may choose to monitor you more closely or make necessary dosing adjustments.

An Overview of Xyzal Drug Interactions

Xyzal® (levocetirizine dihydrochloride) can potentially interact with a few other medications. Some of the medicines that may lead to Xyzal drug interactions include:
 

More Information on Interactions With Xyzal

The following sections explain in detail the potentially negative interactions that can occur when Xyzal is combined with any of the drugs listed above.
 
Ritonavir
Ritonavir can increase the level of Xyzal in your blood, increasing your risk of Xyzal side effects. Check with your healthcare provider before taking ritonavir and Xyzal together, as you may need a lower Xyzal dosage.
 
Theophylline
Theophylline can slightly increase the level of Xyzal in your blood. It is unknown if this is likely to cause any problems, but tell your healthcare provider if you experience any problems when taking these medications together.
 

Final Thoughts on Xyzal Drug Interactions

It is possible that not all Xyzal drug interactions were discussed in this article. Therefore, you should talk with your pharmacist or healthcare provider about any specific drug interactions that may apply to you.
 
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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