Levocetirizine 5mg

Levocetirizine 5 mg – Quick Overview

Levocetirizine 5 mg is an antihistamine used for 24-hour relief of allergy symptoms and certain skin conditions like chronic hives. It works by preventing the effects of histamine, a substance the body produces that causes itching, sneezing, runny nose, and watery eyes. It is available both over the counter and by prescription depending on the product and use. Follow label directions or your doctor’s guidance.

Availability & Regulatory Status

Levocetirizine 5 mg tablets are available over the counter (OTC) in the U.S. for temporary relief of hay fever and other respiratory allergy symptoms. Children’s Xyzal Allergy 24HR and Xyzal Allergy 24HR are available without a prescription. A prescription version also exists (Xyzal Rx) for conditions like chronic idiopathic urticaria (hives) that require a doctor’s diagnosis and monitoring. If you have kidney disease or other health conditions, consult a pharmacist or doctor before use, even for the OTC product.

Clinical Context

Allergic rhinitis (hay fever) and chronic hives are common conditions triggered by histamine release in the body, causing sneezing, congestion, itching, and skin welts. Left unmanaged, ongoing allergy symptoms can disrupt sleep, daily activities, and quality of life.

Levocetirizine is a second-generation antihistamine, meaning it is a histamine H1-receptor antagonist indicated for the relief of symptoms associated with perennial allergic rhinitis as well as the treatment of the uncomplicated skin manifestations of chronic idiopathic urticaria. It’s generally chosen for its once-daily dosing and lower likelihood of drowsiness compared to older antihistamines, though sedation can still occur in some people.

Within allergy care, levocetirizine offers a long-acting oral option for people who need consistent, daily symptom control rather than short-acting relief.

How Levocetirizine Works

Levocetirizine belongs to a drug class called second-generation antihistamines (H1-receptor antagonists). It works by preventing the effects of histamine, which the body produces in response to allergens and which causes itching, sneezing, runny nose, and watery eyes.

In simple terms, levocetirizine blocks histamine from binding to its receptors, stopping the allergic cascade before it triggers symptoms. This reduces sneezing, nasal congestion, itchy or watery eyes, and hives, with effects generally lasting a full 24 hours per dose.

What is Levocetirizine 5 mg?

• Drug Class: Second-generation antihistamine (H1-receptor antagonist)
• Active Ingredient: Levocetirizine dihydrochloride
• Mechanism: Blocks H1 histamine receptors, reducing allergic and hive symptoms
• Form: Immediate-release, white, film-coated, oval-shaped scored tablet, also available as oral solution
• Dosing Frequency: Once daily, typically in the evening
• Regulatory Status: OTC (allergy relief) and Rx (chronic hives) depending on product and indication

Uses / Indications

• Seasonal and perennial allergic rhinitis — relief of sneezing, runny nose, itchy/watery eyes, and nasal itching
• Chronic idiopathic urticaria (hives) — treatment of uncomplicated skin manifestations of chronic hives, typically under a doctor’s care

These are the approved uses; levocetirizine should not be used for conditions not confirmed by a healthcare provider or product labeling.

How to Use / Dosage

Follow the product label for OTC use, or your doctor’s directions if prescribed. The typical adult dose is 5 mg by mouth once daily in the evening; some patients may respond to a lower 2.5 mg dose.

• Timing: Take once daily, generally in the evening; may be taken with or without food
• Missed dose: Take it when you remember that day; if it’s almost time for your next dose, skip the missed one — do not double up
• Do not stop suddenly: While not typically dangerous to stop, some patients have reported itching after discontinuing longer-term use; discuss any concerns with your doctor or pharmacist

Side Effects

Most people tolerate levocetirizine well, but side effects can occur.

Common side effects include drowsiness, dry mouth, fatigue, and sore throat. The most common adverse reactions were somnolence, nasopharyngitis, fatigue, dry mouth, and pharyngitis in subjects 12 years of age and older.

Serious side effects are uncommon but can include signs of allergic reaction, difficulty urinating, or significant drowsiness affecting daily activities like driving.

Emergency Warning Signs — seek medical care immediately if you experience:

• Signs of severe allergic reaction (swelling of face/throat, difficulty breathing, hives that worsen)
• Difficulty or inability to urinate
• Severe drowsiness or trouble staying awake
• Rapid or irregular heartbeat
• Signs of overdose (extreme sedation, confusion, restlessness in children)

Warnings & Precautions

Levocetirizine is contraindicated in patients with a known hypersensitivity to levocetirizine, cetirizine, or hydroxyzine, and in patients with end-stage renal disease on dialysis. Levocetirizine is contraindicated in patients with a creatinine clearance under 10 mL/min or those on hemodialysis.

Regarding drug interactions, combining levocetirizine with alcohol or other central nervous system depressants can increase drowsiness and impair coordination, so this combination should generally be avoided. Certain drug combinations, including some MAO inhibitors and other sedating medications, may also increase CNS depressant effects and should be reviewed with a pharmacist.

For pregnancy and breastfeeding, patients should discuss use with their doctor, since limited human data exist for levocetirizine specifically. Special populations requiring caution or dose adjustment include patients with kidney impairment, who may need reduced dosing based on kidney function, and elderly patients, who may be more prone to age-related liver or kidney changes. Regular monitoring isn’t typically required for healthy adults using levocetirizine as directed, but patients with kidney disease should be monitored by their doctor.

Who Should Not Use This Medication

• Patients with a known allergy to levocetirizine, cetirizine, hydroxyzine, or piperazine derivatives
• Patients with end-stage kidney disease or on dialysis
• Patients with trouble urinating or emptying the bladder, without medical guidance
• Children under the age approved for the specific product (check label)
• Anyone currently using alcohol or other sedating medications without discussing interactions with a pharmacist

Storage Instructions

• Store between 20° and 25°C (68° and 77°F)
• Keep in original packaging, away from excess moisture and light
• Do not use if the carton was opened or if the printed foil inner seal or blister unit is torn or missing
• Keep out of reach of children and pets

Frequently Asked Questions

Is levocetirizine 5 mg available over the counter?

Yes, levocetirizine 5 mg is available OTC in the U.S. for allergy relief, though a prescription version also exists for treating chronic hives under a doctor’s care.

Does levocetirizine require a prescription?

Not for standard allergy relief — it’s sold OTC. However, using it specifically for chronic idiopathic urticaria is typically guided by a doctor’s prescription and monitoring.

How long does levocetirizine take to work?

Many people notice relief within about an hour, with effects lasting up to 24 hours per dose. Full benefit for ongoing conditions may take consistent daily use to assess.

Is it safe to stop taking levocetirizine suddenly?

Generally yes for short-term allergy use, though some people report itching after stopping longer-term use. If you have concerns, check with your doctor or pharmacist.

What happens if I miss a dose?

Take it as soon as you remember that day; if it’s almost time for your next dose, skip the missed one rather than doubling up.

How can I order levocetirizine 5 mg online?

The OTC version can be purchased without a prescription from licensed retailers or pharmacies. If using the prescription version for chronic hives, you’ll need your doctor to send a prescription to a licensed pharmacy for verified, safe delivery.

What is the cost of levocetirizine without insurance?

The cost without insurance depends on the seller, brand availability, and pack size, and may also vary by location and available discounts. Generic OTC versions are generally more affordable than brand-name Xyzal.

Resources

• DailyMed (NIH) – XYZAL Prescribing Information: https://www.accessdata.fda.gov/drugsatfda_docs/label/2025/022064s040,022157s022lbl.pdf
• MedlinePlus – Levocetirizine: https://medlineplus.gov/druginfo/meds/a604025.html
• FDA – XYZAL Rx-to-OTC Switch Review: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2017/209089Orig1s000_209090Orig1s000ClinPharmR.pdf

Medical Disclaimer:

This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Consult a qualified specialist or physician before using Levocetirizine.