Description
Siroline Syrup is a combination cough and congestion medicine designed to provide relief from respiratory discomfort. It contains four active ingredients that work together to ease symptoms. Theophylline relaxes the muscles in the airways, improving airflow and making breathing easier. Ammonium chloride acts as an expectorant by loosening mucus and helping clear phlegm from the chest. Menthol provides a soothing and cooling effect that calms throat irritation, while Diphenhydramine, an antihistamine, reduces allergic responses such as sneezing, runny nose, and watery eyes. Together, these ingredients target multiple causes of cough and congestion, making the syrup effective for asthma-related cough, bronchitis, respiratory tract congestion, and allergy-related symptoms.
Generics
Theophylline, Ammonium Chloride, Menthol, Diphenhydramine.
Drug Class
Expectorant + Bronchodilator + Antihistamine Combination.
Used For
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Relief of cough and chest congestion.
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Asthmatic cough.
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Bronchitis and respiratory tract infections.
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Allergic cough and nasal allergy-related symptoms.
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Bronchial spasm and airway irritation.
How It Works
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Theophylline relaxes bronchial muscles.
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Ammonium Chloride acts as an expectorant.
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Menthol soothes the throat.
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Diphenhydramine reduces allergic reactions.
Dosage
Dosage should be as prescribed by the doctor depending on age, symptoms, and condition severity.
Side Effects
Common: drowsiness, dizziness, nausea, vomiting, diarrhea, headache, nervousness.
Less common: palpitations, tremors, blurred vision, insomnia.
Rare/serious: allergic reaction, seizures, gastrointestinal bleeding.
When Not to Use
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If allergic to any ingredient.
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Severe liver or kidney impairment (unless advised).
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Heart rhythm disturbances or uncontrolled high blood pressure.
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Narrow-angle glaucoma.
Precautions
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Use with caution in patients with heart, liver, or kidney conditions.
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May cause drowsiness or blurred vision—avoid driving.
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Should not be used for long-term relief without medical advice.
Warnings
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Watch for signs of ammonia toxicity with ammonium chloride.
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Diphenhydramine may cause sedation and blurred vision.
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Theophylline requires caution in patients with hepatic or renal impairment.
Drug Interactions
Can interact with alcohol, antibiotics (erythromycin, rifampin), anti-seizure medicines (phenytoin, phenobarbital), heart medicines (verapamil, propranolol), and other sedatives. Always consult a doctor before combining with other drugs.
Indications
Used for cough linked with asthma, bronchitis, congestion of the respiratory tract, and allergic cough.
Pregnancy & Lactation
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Pregnancy: Use only if prescribed by a doctor.
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Lactation: Consult physician before use.
Storage
Store at room temperature (below 25°C), away from sunlight and moisture. Keep tightly closed and out of reach of children.
Doctor’s Review
Dr. Sara Imran – Pulmonologist
“Siroline Syrup is a broad-acting cough remedy that relaxes airways, clears mucus, and controls allergy-related symptoms. It can be very effective in cases of bronchitis, asthmatic cough, and respiratory allergies. However, due to its combination of active ingredients, it should always be used carefully and under medical supervision.”
Disclaimer
This information is for educational purposes only and does not replace medical advice. Please consult a healthcare professional before using this medicine.

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