Xyzal

Allergy Symptom Relief

Xyzal is primarily used to manage symptoms associated with upper respiratory allergies. These symptoms often include:

• Sneezing
• Runny or stuffy nose
• Itchy, watery eyes
• Itching of the nose or throat

Seasonal and Year-Round Allergies

This medication is effective for both seasonal allergies, often called hay fever, and perennial allergies. Seasonal allergies are typically triggered by outdoor allergens like pollen, while perennial allergies are caused by year-round triggers such as dust mites, animal dander, or mold.

Chronic Hives

Xyzal is also used to treat chronic hives, which are itchy red bumps or welts on the skin. It helps reduce the itching and the number of hives caused by this condition.

Mechanism of Action

Xyzal belongs to a class of medications known as antihistamines. It works by blocking the action of histamine, a chemical produced by the body's immune system during an allergic reaction.

When the body encounters an allergen, such as pollen, dust mites, or animal dander, it releases histamine. This chemical attaches to specific receptors on cells, causing common allergy symptoms, including:

• Sneezing
• Runny or stuffy nose
• Itchy, watery eyes
• Itching of the nose or throat
• Hives and skin rashes

The active ingredient in Xyzal, levocetirizine, competes with histamine for these receptor sites. By binding to the receptors first, the medication prevents histamine from attaching and triggering the inflammatory response. This helps to relieve existing symptoms and can prevent new symptoms from developing if taken before exposure to allergens.

Xyzal is considered a long-acting antihistamine, meaning it remains effective in the body for approximately 24 hours. While it is designed to be less likely to enter the brain compared to older antihistamines, it may still cause drowsiness in some individuals.

Common Side Effects

Many people using Xyzal do not experience significant side effects. When they do occur, common symptoms may include:

• Drowsiness or tiredness
• Dry mouth
• Sore throat or cough
• Stomach pain, constipation, or vomiting
• Nosebleeds or fever (more common in children)

Serious Side Effects

Contact a healthcare provider immediately if you experience any of the following serious symptoms:

• Signs of an allergic reaction, such as hives, rash, or itching
• Swelling of the face, lips, tongue, throat, arms, or legs
• Difficulty breathing or swallowing
• Vision changes
• Painful or difficult urination
• Ear infection symptoms in children

In rare cases, some people have reported severe itching after they stop taking this medication, particularly after using it for a long period of time. If this occurs, consult a doctor.

Drowsiness and Alertness

Xyzal can cause significant sleepiness. Activities requiring mental alertness, such as driving or operating heavy machinery, should be approached with caution until the effects of the medication are known. Combining this medication with alcohol or other central nervous system depressants may increase drowsiness and impair performance.

Kidney Function

The kidneys are responsible for removing levocetirizine from the body. Individuals with decreased kidney function may require dosage adjustments to prevent the drug from building up to unsafe levels. This medication is generally contraindicated for people with end-stage renal disease or those undergoing hemodialysis.

Itching After Discontinuation

The FDA has identified a risk of severe itching (pruritus) that can occur after stopping long-term use of levocetirizine. This itching may occur even if it was not a symptom before starting the medication. The condition typically resolves within a few days or weeks, but in some cases, it may persist longer or require restarting the medication to manage the discomfort.

Urinary Retention

Levocetirizine may increase the risk of urinary retention. Caution is advised for individuals with conditions that make it difficult to empty the bladder, such as an enlarged prostate or spinal cord injuries. If symptoms of urinary retention occur, a healthcare provider should be consulted.

Allergic Reactions

Serious allergic reactions are rare but possible. Medical attention is necessary if signs of a hypersensitivity reaction occur, such as:

• Severe rash or hives
• Swelling of the face, lips, or tongue
• Difficulty breathing or swallowing
• Fainting or dizziness

Pregnancy

There are no adequate and well-controlled studies of Xyzal (levocetirizine) in pregnant women. While animal studies have not shown a risk to the fetus, human data is limited. It is important to inform your doctor if you are pregnant or planning to become pregnant before using this medication. Healthcare providers typically recommend using Xyzal during pregnancy only when the potential benefits outweigh the possible risks.

Breastfeeding

Xyzal is known to pass into breast milk. Because of the potential for side effects in a nursing infant, the use of this medication is generally not recommended while breastfeeding. If you are nursing, consult your healthcare provider to determine if you should stop breastfeeding or stop taking the medication.

Available Forms

Xyzal is an antihistamine medication that is taken by mouth. It is available in the following formats:

• Oral Tablet: A solid form that is swallowed.
• Oral Solution: A liquid form that is measured and swallowed, often used for younger patients or those who prefer not to take tablets.

Both the tablet and liquid forms are available as over-the-counter products and may also be available by prescription.

FDA Approval History

Xyzal was first approved by the U.S. Food and Drug Administration (FDA) in 2007 as a prescription medication. In 2017, the FDA approved the transition of levocetirizine to over-the-counter (OTC) status for the relief of allergy symptoms and the treatment of hives. It is currently available in various forms, including oral tablets and liquid solutions.

Approved Indications

The FDA has approved levocetirizine for the following uses:

• Relief of symptoms associated with seasonal allergic rhinitis (hay fever) in adults and children 2 years of age and older.
• Relief of symptoms associated with perennial allergic rhinitis (year-round allergies) in adults and children 6 months of age and older.
• Treatment of uncomplicated skin manifestations of chronic idiopathic urticaria (chronic hives) in adults and children 6 months of age and older.

Safety Communications and Labeling Updates

The FDA has issued safety communications regarding a rare but serious risk associated with the discontinuation of levocetirizine. Based on reports from the FDA Adverse Event Reporting System (FAERS), the agency required drug manufacturers to add a warning to the product labeling about the risk of severe itching (pruritus) after stopping the medication. This condition typically occurs after long-term use, often lasting for months or years. The itching can be intense enough to disrupt sleep or daily life and, in some instances, may only be relieved by restarting the medication.

Allergy Symptom Management

Xyzal, known generically as levocetirizine, is used to treat symptoms caused by hay fever and other upper respiratory allergies. It works by blocking the action of histamine, a substance in the body that causes allergic symptoms when the immune system reacts to an allergen.

Conditions Treated

This medication is commonly used to provide relief from:

• Sneezing and runny nose
• Itchy, watery eyes
• Itching of the nose or throat
• Hives and skin itching (chronic idiopathic urticaria)

Xyzal is effective for both seasonal allergies, which occur during specific times of the year, and perennial allergies, which can occur year-round due to triggers like dust mites, pet dander, or mold.

Dosing for Relief

For most adults and children, Xyzal is taken once daily. Medical providers often suggest taking the dose in the evening, as the medication can cause sleepiness in some users. It is important to follow the specific age-based dosing instructions on the product label or as directed by a healthcare professional to ensure effective relief while minimizing side effects.