Description
Ronex Syrup contains Cetirizine, a second-generation antihistamine widely used for the relief of allergy symptoms. It works by blocking the effects of histamine, a chemical released during allergic reactions, thereby reducing sneezing, runny nose, itchy or watery eyes, and skin rashes such as hives (urticaria). Unlike older antihistamines, Cetirizine causes less drowsiness in most individuals, making it suitable for both day and night use.
Primary Uses
Ronex Syrup is used for:
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Relief of hay fever (allergic rhinitis) symptoms such as sneezing, runny or blocked nose, and itchy eyes.
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Treatment of skin allergies, including rash, itching, and hives (urticaria).
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Reducing allergic responses in seasonal or year-round allergies.
How it Works
Cetirizine blocks H1 histamine receptors in the body, preventing histamine from attaching and triggering allergy symptoms. This action helps in reducing nasal congestion, watery eyes, itching, and skin reactions.
Dosage
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Use as directed by your physician.
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The dose may vary depending on age and severity of symptoms.
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Always use the measuring cup provided with the syrup to ensure accurate dosing.
Side Effects
Serious (rare, seek medical help):
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Confusion, hallucinations
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Abnormal liver function tests
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Rapid heartbeat
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Loss of consciousness
Common (1 in 100–10 in 100 people):
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Headache, dizziness
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Drowsiness or tiredness
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Restlessness
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Dry mouth, sore throat
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Upset stomach, diarrhea, nausea
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Runny nose
Uncommon (1 in 1000–100 in 1000 people):
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Agitation, weakness, malaise
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Tingling sensations (pins & needles)
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Itching, rash
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Abdominal pain
Drug Interactions
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CNS depressants
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Alcohol (increases drowsiness and side effects)
When Not to Use
Avoid Ronex Syrup if you:
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Are allergic to Cetirizine or any of its ingredients.
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Have serious kidney impairment.
Precautions & Warnings
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If you are scheduled for an allergy test, consult your doctor before use as this medicine may affect test results.
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Patients with epilepsy, bladder problems, or difficulty passing urine should seek medical advice before using.
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Usually does not cause drowsiness, but in rare cases may affect ability to drive or operate machinery.
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This product contains lactose; patients with lactose intolerance should consult their physician before use.
Pregnancy & Lactation
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Use only if clearly needed and after consultation with a doctor.
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Safety in breastfeeding mothers is not fully established—consult your physician.
Storage
Store at room temperature, away from direct sunlight and heat. Keep tightly closed and out of reach of children.
Doctor’s Review
Dr. Sara Ahmed (Allergy & Immunology Specialist):
“Cetirizine syrup is a commonly prescribed option for both seasonal and chronic allergies. It helps manage nasal, eye, and skin symptoms effectively without causing much drowsiness in most patients. While generally safe, monitoring is important in children and individuals with kidney problems.”
Disclaimer
This information is provided for educational purposes only and should not replace professional medical advice. Always consult your physician or healthcare provider before starting or stopping any medication.

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