### Introduction
Zyrtec syrup is an antihistamine medication containing the active ingredient cetirizine hydrochloride. It is commonly used to relieve allergy symptoms such as sneezing, itching, watery eyes, and runny nose. It is available over-the-counter and by prescription.

### Uses
- **Allergic Rhinitis:** Relieves symptoms of hay fever or other upper respiratory allergies.
- **Chronic Urticaria:** Treats itching and swelling caused by chronic hives.
- **Common Cold:** Alleviates allergy-like symptoms associated with the common cold.

### Benefits
- **Fast-Acting:** Begins to work within an hour of ingestion.
- **Long-Lasting:** Provides relief for up to 24 hours.
- **Non-Drowsy Formula:** Less likely to cause drowsiness compared to other antihistamines.
- **Pediatric Use:** Safe for children, with appropriate dosing guidelines.

### Dosage
- **Adults and Children 6 Years and Older:** 5 mg or 10 mg once daily, depending on the severity of symptoms.
- **Children 2 to 5 Years:** 2.5 mg once daily. The dose can be increased to a maximum of 5 mg per day.
- **Children Under 2 Years:** Consult a healthcare provider.

**Note:** Always follow the dosage instructions provided by your healthcare provider or the product label.

### Side Effects
- **Common Side Effects:**
- Drowsiness
- Dry mouth
- Stomach pain
- Diarrhea
- Fatigue
- **Serious Side Effects:** Rare but may include difficulty breathing, severe dizziness, and swelling of the face, lips, tongue, or throat. Seek immediate medical attention if these occur.

### Precautions
- Avoid alcohol as it can increase drowsiness.
- Use with caution in patients with liver or kidney disease.
- Not recommended for pregnant or breastfeeding women without medical advice.

Always consult with a healthcare provider for personalized medical advice and to ensure the medication is appropriate for your specific condition.

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