Zyrtec Side Effects
Generic Name: cetirizine
Note: This document contains side effect information about cetirizine. Some of the dosage forms listed on this page may not apply to the brand name Zyrtec.
For the Consumer
Applies to cetirizine: oral solution, oral tablets and chewable tablets
Side effects include:
Adults and children ≥12 years of age: Somnolence, fatigue, dry mouth. Insomnia reported with cetirizine (the active ingredient contained in Zyrtec) hydrochloride-pseudoephedrine hydrochloride fixed combination.
Children 6 months to 2 years of age: Irritability, fussiness, insomnia, fatigue, malaise.
For Healthcare Professionals
Applies to cetirizine: oral capsule, oral liquid, oral syrup, oral tablet, oral tablet chewable, oral tablet dispersible
Very common (10% or more): Somnolence (up to 14.3%), headache (up to 14%)
Common (1% to 10%): Dizziness
Frequency not reported: Altered sense of taste, paresthesia, hypertonia, tremor, abnormal coordination/incoordination, ataxia, hyperesthesia, hyperkinesia, hypoesthesia, migraine, paralysis, twitching, parosmia, taste loss/perversion
Uncommon (0.1% to 1%): Dyspepsia
Frequency not reported: Tongue disorder, constipation, flatulence, increased salivation, aggravated tooth caries, eructation, gastritis, hemorrhoids, melena, rectal hemorrhage, stomatitis/ulcerative stomatitis, tongue discoloration/edema, enlarged abdomen[Ref]
Common (1% to 10%): Pharyngitis, rhinitis, coughing, epistaxis
Frequency not reported: Dyspnea, respiratory disorder, bronchospasm, upper respiratory tract infection, dysphonia, bronchitis, hyperventilation, increased sputum, pneumonia, sinusitis, nasal polyp[Ref]
Common (1% to 10%): Fatigue
Frequency not reported: Earache, tinnitus, fever, pain, rigor, thirst, deafness, ototoxicity, accidental injury, face edema, leg edema, malaise
Postmarketing reports: Asthenia, stillbirth[Ref]
Common (1% to 10%): Insomnia
Frequency not reported: Nervousness, impaired concentration, confusion, decreased libido, abnormal thinking, anxiety, depersonalization, emotional lability, euphoria, paroniria, sleep disorder
Very rare (less than 0.01%): Myelitis
Frequency not reported: Pruritus/intense itching, increased sweating, acne, alopecia, bullous eruption, dermatitis, dry skin, eczema, erythematous rash, furunculosis, hyperkeratosis, hypertrichosis, maculopapular rash, photosensitivity/photosensitivity toxic reaction, purpura, seborrhea, skin disorder/nodule
Frequency not reported: Eye abnormality, periorbital edema, abnormal vision, eye pain, conjunctivitis, ptosis, visual field defects, blindness, glaucoma, ocular hemorrhage, xerophthalmia, periorbital edema/eye swelling
Postmarketing reports: Accommodation disorder/loss of accommodation, blurred vision, oculogyration, orofacial dyskinesia[Ref]
Frequency not reported: Polyuria, urinary retention, urinary tract infection, dysmenorrhea, hematuria, micturition frequency, urinary incontinence, female breast pain, intermenstrual bleeding, leukorrhea, menorrhagia, vaginitis
Frequency not reported: Reversible transaminase elevations
Postmarketing reports: Abnormal hepatic function (increased transaminases, alkaline phosphatase, GGT, bilirubin), cholestasis, hepatitis[Ref]
Frequency not reported: Allergic reactions/delayed allergic reactions
Frequency not reported: Lymphadenopathy
Frequency not reported: Cystitis
Postmarketing reports: Glomerulonephritis[Ref]
1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
2. "Product Information. Zyrtec (cetirizine)." Pfizer US Pharmaceuticals, New York, NY.
3. Cerner Multum, Inc. "Australian Product Information." O 0
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.
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More about Zyrtec (cetirizine)
- During Pregnancy or Breastfeeding
- Dosage Information
- Patient Tips
- Drug Images
- Drug Interactions
- Compare Alternatives
- Support Group
- Pricing & Coupons
- En Español
- 117 Reviews
- Drug class: antihistamines
- Zyrtec (Cetirizine Capsules and Tablets)
- Zyrtec (Cetirizine Chewable Tablets)
- Zyrtec (Cetirizine Orally Disintegrating Tablets)
- Zyrtec (Cetirizine Syrup)