
Levocetirizine is an antihistamine medication used to treat allergy symptoms such as a runny nose, sneezing, and itchy or watery eyes. It is available in prescription and over-the-counter forms and can be taken as a liquid or tablet. While levocetirizine is not classified as a sleeping pill, one of its common side effects is drowsiness. It is advised that individuals taking levocetirizine do not drive or operate machinery until they know how the medication affects them. Additionally, combining levocetirizine with other medications that cause sleepiness, such as sleeping pills or anxiety medications, may worsen the drowsiness effect. Therefore, it is important to consult with a doctor or healthcare provider before taking levocetirizine in conjunction with other substances.
| Characteristics | Values |
|---|---|
| Drug class | Antihistamine |
| Generic name | Levocetirizine |
| Brand names | Xyzal, Levrix, Children's Xyzal Allergy 24HR, Xyzal Allergy 24HR |
| Dosage forms | Oral solution (2.5 mg/5 mL), oral tablet (5 mg) |
| Age | Adults and children older than 2 years |
| Dosage | 5 milligrams (mg) or 10 milliliters (mL) (1 teaspoon) once a day |
| Side effects | Dizziness, poor concentration, drowsiness, unusual dreams, trouble with sleeping, dry mouth, allergic reactions, kidney problems, blurry vision |
| Warnings | Do not take with alcohol or other medicines that affect the central nervous system (CNS), do not drive or operate machinery until you know how it affects you, do not take more than the recommended dose |
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What You'll Learn

Levocetirizine is an antihistamine that treats allergy symptoms
Levocetirizine works by blocking the release of histamine, a natural chemical in the body that can cause allergy symptoms such as a runny nose, sneezing, and itchy, watery eyes. Histamine can also cause hives and make breathing difficult by closing up the bronchial tubes (air passages of the lungs).
Levocetirizine is generally well-tolerated, but some common side effects may include drowsiness, dry mouth, dizziness, poor concentration, unusual dreams, and trouble sleeping. It is important to note that taking levocetirizine with other drugs that cause sleepiness, such as sleeping pills, muscle relaxers, or medicine for anxiety, can worsen this effect. Therefore, it is recommended to consult a doctor or pharmacist before taking levocetirizine with other medications.
The recommended dosage of levocetirizine for adults and children older than 12 years of age is 5 milligrams (mg) or 10 milliliters (mL) once a day in the evening. For children 6 months to 2 years old, the starting dose is typically 1.25 mg or 2.5 mL once a day, which can be adjusted by a doctor as needed. It is important not to take more than the recommended dose of levocetirizine, as higher doses can increase the risk of sleepiness.
While rare, some serious side effects of levocetirizine include severe allergic reactions and inability to empty the bladder (urinary retention). Patients should stop taking levocetirizine and seek medical help immediately if they experience any symptoms of an allergic reaction or difficulty urinating. Additionally, levocetirizine is not recommended for anyone with end-stage kidney disease or on dialysis, and it should be used with caution in children with kidney disease.
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It is not a sleeping pill but may cause drowsiness
Levocetirizine is an antihistamine drug used to treat allergy symptoms such as a runny nose, sneezing, rashes, and reactions to insect bites or stings. It is also used to relieve itching caused by hives (patches of red, swollen, itchy skin). The drug is available in prescription and over-the-counter forms as an oral tablet and solution, with brand-name OTC tablets called Xyzal Allergy 24HR and Children's Xyzal® Allergy 24HR.
While levocetirizine is not a sleeping pill, it may cause drowsiness in some individuals. It is important to note that this side effect may vary depending on age and other medications being taken. The risk of sleepiness increases at higher doses, and using levocetirizine with other drugs that cause drowsiness can worsen this effect. These include opioid medication, sleeping pills, muscle relaxers, and medicine for anxiety or seizures. Therefore, it is crucial to consult a doctor or pharmacist before taking levocetirizine with other medications. Additionally, alcohol consumption can enhance the drowsiness caused by levocetirizine, so it is recommended to ask a doctor about the safe use of alcoholic beverages while on this medication.
The side effects of levocetirizine are generally mild and may include dry mouth, dizziness, poor concentration, unusual dreams, and trouble sleeping. However, some individuals may experience more severe side effects, such as allergic reactions, kidney problems, or blurry vision. It is important to contact a doctor or seek medical help if any severe side effects occur.
Levocetirizine is generally safe for children aged 6 months and older, but the safety and efficacy have not been established in infants younger than 6 months for the oral solution or children younger than 2 years for Children's Xyzal® Allergy 24HR oral solution. It is also important to note that children with kidney disease should not take levocetirizine, and elderly patients may require dosage adjustments due to age-related liver, kidney, or heart problems.
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It is available over-the-counter and by prescription
Levocetirizine is an antihistamine drug used to treat allergy symptoms such as a runny nose, sneezing, itching, rashes, and reactions to insect bites or stings. It is also used to relieve itching caused by hives (red, swollen, itchy patches of skin). It belongs to a class of drugs called antihistamines, which work by blocking the release of histamine, a chemical that causes allergic symptoms.
Levocetirizine is available in both prescription and over-the-counter (OTC) forms. The prescription form is a generic drug called levocetirizine dihydrochloride, which is available as an oral tablet and solution. The over-the-counter version is available as an oral tablet under the brand name Xyzal Allergy 24HR. It is also available in other OTC versions as various store-brand names.
The prescription form of levocetirizine is typically used for more severe or persistent allergy symptoms that do not respond well to OTC antihistamines. It may also be prescribed for individuals who have multiple allergies or for those who have not found relief with other treatments. The prescription form may be more suitable for those who require a specific dosage or formulation that is not available in OTC products.
On the other hand, the over-the-counter form of levocetirizine is easily accessible without a prescription and can be purchased at pharmacies and drug stores. It is typically used for milder or occasional allergy symptoms and can be taken as needed to manage allergies. The OTC form is ideal for those who want the convenience of treating their allergies without having to schedule a doctor's appointment.
It is important to note that levocetirizine may cause drowsiness as a side effect, especially when taken with other medications that induce sleepiness. Therefore, it is recommended to consult a healthcare provider before taking levocetirizine with any other medicines, including prescription, over-the-counter, herbal, or vitamin supplements. Additionally, individuals taking levocetirizine should refrain from driving or operating machinery until they know how the medication affects them.
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It is not recommended for children under 6 months old
Levocetirizine is an antihistamine used to treat allergy symptoms such as a runny nose, sneezing, and itching caused by hives. It is available as an oral tablet or solution and can be purchased over the counter or with a prescription. While levocetirizine is generally safe for children, it is not recommended for children under 6 months old.
The safety and efficacy of levocetirizine have not been established for infants younger than 6 months of age. This is because the potential benefits of the medication must be weighed against the risks, and in the case of very young infants, the risks may outweigh the benefits. There are also specific considerations for children under 6 months old when it comes to dosage and administration.
The dosage of levocetirizine is based on age, with specific recommendations for adults and children over 12, children 6 to 11 years old, and children 2 to 6 years old. For children under 2 years old, including those under 6 months, the dosage must be determined by a doctor. This is because the medication may need to be adjusted based on the child's weight, age, and medical history.
In addition, children under 6 months old are more vulnerable to potential side effects of medications. While levocetirizine is generally well-tolerated, it can cause drowsiness, dry mouth, and, in rare cases, severe allergic reactions. These side effects may be more pronounced in very young infants, and the risk of adverse effects may outweigh the potential benefits of the medication.
Furthermore, levocetirizine may interact with other medications, including sleeping pills, muscle relaxers, and medicines for anxiety, and these interactions may be more pronounced in young infants. Therefore, it is crucial to consult a healthcare provider before administering any medication to children under 6 months old, including levocetirizine.
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It may be used in combination with other medications
Levocetirizine is an antihistamine used to treat allergy symptoms such as a runny nose, sneezing, and itchy or watery eyes. It is also used to relieve itching caused by hives (red, swollen, itchy patches of skin) and insect bites or stings. It is available over-the-counter and by prescription as an oral tablet or solution. Levocetirizine is typically taken once a day in the evening and can cause side effects such as drowsiness, dry mouth, and allergic reactions. It is important to note that levocetirizine may interact with other medications and increase feelings of drowsiness. Therefore, it is recommended to consult a doctor or pharmacist before taking levocetirizine with other medications, especially those that cause sleepiness, such as prescription pain medicines, sleep medicines, and medicines for anxiety.
When considering combination therapy with levocetirizine, it is crucial to understand its potential interactions with other drugs. Levocetirizine is known to increase the risk of drowsiness, especially when combined with other medications that have similar effects. This includes prescription pain medications, sleep medications, and medicines for anxiety. It is important to consult a doctor or pharmacist before taking levocetirizine with any other medications to ensure safe use and avoid potential drug interactions. Additionally, levocetirizine should be used with caution in combination with central nervous system (CNS) depressants, such as alcohol, sedatives, tranquilizers, or other antihistamines. Combining levocetirizine with these substances may enhance its side effects, including dizziness, poor concentration, drowsiness, unusual dreams, and trouble sleeping.
Furthermore, levocetirizine may interact with certain medications used to treat specific medical conditions. For example, it is important to inform your doctor if you are taking Ritonavir (Norvir), a medication commonly used to treat HIV, as it may interact with levocetirizine. Additionally, if you are taking Theophylline (Elixophyllin, Theo-24) for asthma or breathing problems, it is crucial to disclose this information to your healthcare provider before taking levocetirizine. These are just a few examples, and there may be other medications that can interact with levocetirizine that are not listed here. Therefore, it is essential to be transparent with your healthcare provider about all the medications, vitamins, and supplements you are taking to ensure safe and effective combination therapy with levocetirizine.
In addition to potential drug interactions, it is important to consider the impact of levocetirizine on specific populations, such as children and the elderly, when used in combination with other medications. While levocetirizine has been shown to be safe and effective in children as young as 6 months old, the safety and efficacy have not been established in infants younger than 6 months for the oral solution or in children younger than 2 years for the oral solution of Children's Xyzal® Allergy 24HR. Furthermore, for children with kidney disease, the use of levocetirizine is not recommended between the ages of 6 months and 11 years. In the elderly, levocetirizine can be safely used, but caution may be necessary due to age-related liver, kidney, or heart problems, which may require adjustments in dosage. Therefore, when considering combination therapy with levocetirizine in these populations, it is crucial to consult a healthcare professional to ensure the safety and efficacy of the treatment regimen.
Lastly, it is important to be aware of the potential side effects of levocetirizine when used in combination with other medications. While levocetirizine is generally well-tolerated, it can cause side effects such as drowsiness, dry mouth, and allergic reactions. Additionally, there have been rare reports of severe itching when stopping levocetirizine after long-term use. Therefore, it is crucial to monitor for any side effects and inform your healthcare provider if you experience any unusual symptoms, especially if you are taking multiple medications. Furthermore, levocetirizine may not be suitable for individuals with certain medical conditions, such as end-stage kidney disease or those on dialysis, pregnant or breastfeeding women, or individuals with a history of allergic reactions to similar medications. In conclusion, while levocetirizine can be used in combination with other medications, it is important to exercise caution, consult healthcare professionals, and carefully consider the specific circumstances of each patient to ensure safe and effective treatment.
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Frequently asked questions
Levocetirizine is a generic antihistamine drug used to treat allergy symptoms and itchiness caused by hives. It is available in prescription and over-the-counter forms as an oral tablet and solution.
The most common side effects of levocetirizine include drowsiness, dry mouth, dizziness, poor concentration, unusual dreams, and trouble sleeping. Less common but more serious side effects include allergic reactions and inability to empty the bladder.
Levocetirizine may interact with other medications that cause sleepiness, such as prescription pain medicines, sleep medicines, and medicines for anxiety. It is important to consult with a doctor or pharmacist before taking levocetirizine with other medications.
The dosage of levocetirizine depends on age. For adults and children 12 years and older, the recommended dosage is 5 milligrams (mg) once a day taken in the evening. For children 6 to 11 years old, the dosage is typically 2.5 mg once a day.
No, levocetirizine is not a sleeping pill. It is an antihistamine used to treat allergy symptoms and itchiness associated with hives. While it may cause drowsiness as a side effect, it is not intended or prescribed as a sleep aid.




























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