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Cetirizine Hydrochloride: Brands, Price & Uses in Bangladesh
Cetirizine Hydrochloride is a second-generation (relatively non-sedating) H1-antihistamine used for the relief of allergic symptoms.
About Cetirizine Hydrochloride
Indications of Cetirizine Hydrochloride
Cetirizine Hydrochloride is a second-generation (relatively non-sedating) H1-antihistamine used for the relief of allergic symptoms.
Established / FDA-approved uses
- Seasonal allergic rhinitis (hay fever) - relief of sneezing, rhinorrhea, nasal itching/congestion, itchy and watery eyes, and itchy throat/palate.
- Perennial allergic rhinitis - year-round allergic nasal symptoms due to indoor allergens (dust mites, pet dander, mold).
- Chronic idiopathic urticaria (hives) - reduces the number, size, and pruritus of hives.
Guideline-supported / commonly used indications
- Allergic conjunctivitis - relief of ocular itching and watering associated with allergy (oral use as an adjunct; a separate ophthalmic formulation of Cetirizine Hydrochloride also exists for direct eye use).
- Acute urticaria and insect-bite or contact-allergen reactions - symptomatic relief of itching and wheals.
Adjunct / off-label use
- Sometimes used as an adjunct with other antihistamines or in combination with a nasal corticosteroid for allergic rhinitis not controlled by a single agent; used off-label for pruritus of other causes (e.g., atopic dermatitis) under physician supervision, though this is not an approved primary indication.
Dosage & Administration of Cetirizine Hydrochloride
Dosing of Cetirizine Hydrochloride is individualized by age, indication, and renal/hepatic function. It may be taken once daily due to its prolonged duration of action.
| Population | Recommended dose |
|---|---|
| Adults and children ≥12 years | 5-10 mg once daily, depending on symptom severity; maximum 10 mg/day |
| Children 6-11 years | 5-10 mg once daily (or 5 mg twice daily for some formulations); maximum 10 mg/day |
| Children 2-5 years | 2.5 mg once daily, may increase to a maximum of 5 mg/day (as 2.5 mg twice daily or 5 mg once daily) per physician guidance |
| Children 6 months-23 months | 2.5 mg once daily (physician-directed use only) |
| Elderly (≥65 years) | Start at 5 mg once daily; increase cautiously only if well tolerated |
| Renal impairment (moderate, CrCl 11-31 mL/min) and hemodialysis patients | 5 mg once daily |
| Hepatic impairment (moderate-severe) | 5 mg once daily |
See Use in Special Populations and Precautions and Warnings for further detail on dose adjustment in organ impairment and in children.
Side Effects of Cetirizine Hydrochloride
Common side effects of Cetirizine Hydrochloride (generally mild) include:
- Somnolence/drowsiness (more frequent than with some other second-generation antihistamines, though still less than first-generation agents)
- Dry mouth
- Fatigue
- Headache
- Pharyngitis and dizziness (reported more often in children)
- Gastrointestinal upset (nausea, abdominal discomfort) - occasionally
Because somnolence can occur, caution with driving/operating machinery is warranted (see Precautions and Warnings). Rare but serious effects include hypersensitivity reactions such as angioedema, dyspnea, and anaphylaxis - seek immediate medical attention if these occur.
Contraindications of Cetirizine Hydrochloride
Cetirizine Hydrochloride is contraindicated in patients with known hypersensitivity to cetirizine, hydroxyzine, or any other piperazine derivative, or to any excipient of the formulation used.
Frequently Asked Questions about Cetirizine Hydrochloride
What is Cetirizine Hydrochloride used for?
Cetirizine Hydrochloride is mainly used to relieve symptoms of seasonal and perennial allergic rhinitis (sneezing, runny/itchy nose, itchy watery eyes) and to reduce the itching and hives of chronic idiopathic urticaria. It is also used for allergic conjunctivitis and other allergic itching/hive conditions.
How quickly does Cetirizine Hydrochloride work and how long does it last?
Cetirizine Hydrochloride typically starts working within about 20-60 minutes and its effect lasts approximately 24 hours, which is why it is usually taken once daily.
Can I take Cetirizine Hydrochloride every day for a long time?
Cetirizine Hydrochloride can be used for extended periods (weeks to months) for chronic conditions such as perennial allergic rhinitis or chronic urticaria, but ongoing need should be reviewed periodically with a physician; it should not be continued indefinitely without medical follow-up.
Does Cetirizine Hydrochloride make you drowsy, and is it safe to drive?
Cetirizine Hydrochloride causes less drowsiness than older (first-generation) antihistamines, but some people still feel sleepy, especially at higher doses. You should know how you personally respond to Cetirizine Hydrochloride before driving or operating machinery, and avoid combining it with alcohol or other sedating medicines.
Is Cetirizine Hydrochloride safe during pregnancy or breastfeeding?
Cetirizine Hydrochloride should be used in pregnancy only if clearly needed, after consulting a physician, since adequate human safety data are limited; it is classified under the older category system as Pregnancy Category B. It passes into breast milk, so a nursing mother should consult her physician before use, as it may cause drowsiness or other effects in the infant.
Who should not take Cetirizine Hydrochloride?
Cetirizine Hydrochloride should not be taken by anyone with a known allergy (hypersensitivity) to cetirizine, hydroxyzine, or other piperazine-derivative antihistamines. People with significant kidney or liver impairment need a reduced dose and should use it only under medical supervision.
Disclaimer
The information provided is accurate to the best of our knowledge, but it does not replace professional medical advice. We cannot guarantee its completeness or accuracy, and the absence of specific information about a drug should not be taken as an endorsement. We are not responsible for any consequences arising from this information, so please consult a healthcare professional for any concerns or questions.