Last reviewed · How we verify

levocetirizine (Xyzal)

AAADRS Clinical Research Center · FDA-approved active Small molecule

levocetirizine (Xyzal) is a H1-receptor antagonist (second-generation antihistamine) Small molecule drug developed by AAADRS Clinical Research Center. It is currently FDA-approved for Allergic rhinitis (seasonal and perennial), Chronic urticaria, Allergic conjunctivitis. Also known as: Xyzal.

Levocetirizine is a selective H1-receptor antagonist that blocks histamine signaling to reduce allergic symptoms.

Levocetirizine is a selective H1-receptor antagonist that blocks histamine signaling to reduce allergic symptoms. Used for Allergic rhinitis (seasonal and perennial), Chronic urticaria, Allergic conjunctivitis.

At a glance

Generic namelevocetirizine (Xyzal)
Also known asXyzal
SponsorAAADRS Clinical Research Center
Drug classH1-receptor antagonist (second-generation antihistamine)
TargetH1 receptor
ModalitySmall molecule
Therapeutic areaAllergy/Immunology
PhaseFDA-approved

Mechanism of action

Levocetirizine is the active R-enantiomer of cetirizine, a second-generation antihistamine that selectively antagonizes peripheral H1 receptors. By blocking histamine binding to these receptors, it prevents the cascade of allergic responses including itching, urticaria, and rhinitis without significant central nervous system penetration due to its hydrophilic nature and poor blood-brain barrier crossing.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape:

Frequently asked questions about levocetirizine (Xyzal)

What is levocetirizine (Xyzal)?

levocetirizine (Xyzal) is a H1-receptor antagonist (second-generation antihistamine) drug developed by AAADRS Clinical Research Center, indicated for Allergic rhinitis (seasonal and perennial), Chronic urticaria, Allergic conjunctivitis.

How does levocetirizine (Xyzal) work?

Levocetirizine is a selective H1-receptor antagonist that blocks histamine signaling to reduce allergic symptoms.

What is levocetirizine (Xyzal) used for?

levocetirizine (Xyzal) is indicated for Allergic rhinitis (seasonal and perennial), Chronic urticaria, Allergic conjunctivitis.

Who makes levocetirizine (Xyzal)?

levocetirizine (Xyzal) is developed and marketed by AAADRS Clinical Research Center (see full AAADRS Clinical Research Center pipeline at /company/aaadrs-clinical-research-center).

Is levocetirizine (Xyzal) also known as anything else?

levocetirizine (Xyzal) is also known as Xyzal.

What drug class is levocetirizine (Xyzal) in?

levocetirizine (Xyzal) belongs to the H1-receptor antagonist (second-generation antihistamine) class. See all H1-receptor antagonist (second-generation antihistamine) drugs at /class/h1-receptor-antagonist-second-generation-antihistamine.

What development phase is levocetirizine (Xyzal) in?

levocetirizine (Xyzal) is FDA-approved (marketed).

What are the side effects of levocetirizine (Xyzal)?

Common side effects of levocetirizine (Xyzal) include Somnolence, Headache, Fatigue, Dry mouth, Pharyngitis.

What does levocetirizine (Xyzal) target?

levocetirizine (Xyzal) targets H1 receptor and is a H1-receptor antagonist (second-generation antihistamine).

Related