xonus-pd syrup - Chlorpheniramine Maleate (4mg) + Dextromethorphan Hydrobromide (5mg) medicine

Xonus-PD Syrup: Complete Medicine Guide

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🏭 Cronus Biotech Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 25, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Moderate for short-term symptomatic relief of cough and allergy symptoms.
Reviewed by
SaathiMed Expert Panel | Sep 25, 2026

When to Call Your Doctor IMMEDIATELY

  • Difficulty breathing or shortness of breath
  • Swelling of the face, lips, tongue, or throat
  • Severe drowsiness or confusion
  • Fast, irregular heartbeat
  • Hallucinations or unusual behavior
  • Seizures
  • Inability to urinate
  • Yellowing of skin or eyes

If experiencing severe symptoms, call emergency services immediately.

What is xonus-pd syrup used for?

This medicine is a combination syrup containing chlorpheniramine maleate (an antihistamine) and dextromethorphan hydrobromide (a cough suppressant). It is used for temporary relief of cough and allergy symptoms such as runny nose, sneezing, and itchy throat. It may cause drowsiness, so avoid driving. Do not use for more than 7 days without consulting a doctor.

  • Generic Name: Chlorpheniramine Maleate (4mg) + Dextromethorphan Hydrobromide (5mg)
  • Manufacturer: Cronus Biotech Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 xonus-pd syrup के बारे में (Hindi Summary)

उपयोग: यह दवा कफ और एलर्जी के लक्षणों जैसे छींक, नाक बहना, गले में खुजली और सूखी खांसी से राहत के लिए दी जाती है। इसमें क्लोरफेनिरामाइन मेलिएट और डेक्सट्रोमेथोर्फन हाइड्रोब्रोमाइड होते हैं। यह अल्पकालिक उपयोग के लिए है और इससे नींद आ सकती है, इसलिए गाड़ी चलाने से बचें।

साइड इफेक्ट्स: आम दुष्प्रभावों में नींद आना, मुंह सूखना, चक्कर आना, जी मिचलाना और धुंधली दृष्टि शामिल हैं। गंभीर दुष्प्रभाव दुर्लभ हैं लेकिन एलर्जी, भ्रम, या दौरे पड़ सकते हैं। यदि सांस लेने में कठिनाई, चेहरे या गले में सूजन, या असामान्य व्यवहार हो तो तुरंत डॉक्टर से मिलें।

सुरक्षा सलाह: इस दवा का उपयोग केवल अल्पकालिक राहत के लिए करें। निर्धारित मात्रा से अधिक न लें। शराब और अन्य नींद लाने वाली दवाओं से बचें। गाड़ी चलाने या मशीन चलाने से बचें। बच्चों की पहुंच से दूर रखें। यदि गर्भवती हैं, स्तनपान करा रही हैं, या ग्लूकोमा, प्रोस्टेट बढ़ा हुआ है, तो डॉक्टर से सलाह लें।

💡 Did You Know? India has the highest number of USFDA-compliant plants outside the USA.

💊 xonus-pd syrup Uses & Benefits

[{"condition":"Cough due to cold or allergy","description":"Temporary relief of dry, irritating cough associated with upper respiratory tract infections or allergic rhinitis.","evidence":"Well-established for short-term symptomatic relief."},{"condition":"Allergic rhinitis symptoms","description":"Relieves sneezing, runny nose, itchy and watery eyes, and itching of the nose or throat.","evidence":"Well-established for antihistamine component."},{"condition":"Common cold symptoms","description":"Provides symptomatic relief of cough and nasal allergy symptoms associated with the common cold.","evidence":"Commonly used, though evidence for combination products is modest."}]

Off-label uses: [{"condition":"Cough in palliative care","description":"Sometimes used for distressing cough in palliative settings under specialist supervision.","evidence":"Limited"}]

Primary treatment for: Cough and allergic rhinitis

Also treats: Common cold, Allergic conjunctivitis, Sneezing and runny nose

📋 Drug Information

Generic Name(s)Chlorpheniramine Maleate (4mg) + Dextromethorphan Hydrobromide (5mg)
Brand Namexonus-pd syrup
ManufacturerCronus Biotech Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassRESPIRATORY
Action Class
Route of AdministrationOral
StorageStore at room temperature between 15°C and 30°C. Protect from light and moisture. Do not freeze.
Shelf Life24 months from the date of manufacture.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Shake the bottle well before each use to ensure uniform mixing of the ingredients.
2
Use a proper measuring cup or spoon; household spoons may not give an accurate dose.
3
Avoid giving this medicine to children under 2 years without a doctor's advice.
4
Do not use for more than 7 days without consulting a doctor.
5
If you are taking other medicines, especially for depression or allergies, inform your doctor to avoid interactions.
6
Avoid driving or operating machinery until you know how this medicine affects you.
7
Keep a record of when you take the medicine to avoid double dosing.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Dry cough
This medicine is commonly prescribed for dry cough.
Likely Use
✅
Runny nose
The antihistamine component helps relieve runny nose.
Likely Use
✅
Sneezing
Chlorpheniramine reduces sneezing.
Likely Use
❌
Productive cough with phlegm
This medicine is not for cough with excessive mucus; consult a doctor.
Not Primary
❌
Fever
This medicine does not reduce fever.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionChlorpheniramine maleate is absorbed from the gastrointestinal tract with a bioavailability of about 25-50%. Dextromethorphan hydrobromide is rapidly absorbed from the gastrointestinal tract.
DistributionChlorpheniramine distributes widely into body tissues and crosses the blood-brain barrier. Dextromethorphan also distributes into the central nervous system.
Protein BindingChlorpheniramine is about 70% bound to plasma proteins. Dextromethorphan protein binding is not well established.
MetabolismChlorpheniramine is metabolized in the liver, primarily by CYP2D6 and CYP3A4. Dextromethorphan is metabolized in the liver by CYP2D6 to dextrorphan, its active metabolite.
Half-LifeChlorpheniramine elimination half-life is approximately 12-43 hours. Dextromethorphan half-life is about 2-4 hours.
ExcretionChlorpheniramine and its metabolites are excreted mainly in urine. Dextromethorphan metabolites are excreted in urine.
BioavailabilityChlorpheniramine oral bioavailability is about 25-50%. Dextromethorphan oral bioavailability is approximately 10-40% due to first-pass metabolism.
Onset of ActionAntihistamine effects begin within 30-60 minutes. Cough suppression begins within 15-30 minutes.
Peak Plasma TimeChlorpheniramine peak plasma concentration occurs at 2-6 hours. Dextromethorphan peak occurs at 2-3 hours.
Duration of ActionChlorpheniramine effects last 4-6 hours. Dextromethorphan cough suppression lasts 4-6 hours.

How It Works

This medicine combines an antihistamine and a cough suppressant. Chlorpheniramine maleate blocks histamine H1 receptors, reducing allergy symptoms such as sneezing, runny nose, and itching. Dextromethorphan hydrobromide acts on the central nervous system to suppress the cough reflex by reducing sensitivity of the cough center in the medulla.

Mechanism Steps

1
Histamine H1 receptor blockade: Chlorpheniramine maleate competitively blocks histamine at H1 receptors on blood vessels and nerve endings, reducing vasodilation, permeability, and sensory nerve stimulation.
2
Central cough suppression: Dextromethorphan hydrobromide acts on the cough center in the medulla oblongata to raise the threshold for cough reflex.
3
Anticholinergic effects: Chlorpheniramine also has anticholinergic properties that contribute to dry mouth, urinary retention, and blurred vision.
4
Sedation: Chlorpheniramine crosses the blood-brain barrier and causes drowsiness by blocking central histamine receptors.

💡 How to Take xonus-pd syrup

Strength: Each 5 mL of syrup contains chlorpheniramine maleate 4 mg and dextromethorphan hydrobromide 5 mg.

1Shake the bottle well before each use.
2Use a measuring cup or spoon to measure the dose accurately.
3Take the medicine orally, with or without food.
4Do not exceed the recommended dose.
5If symptoms persist beyond 7 days, consult a doctor.

Dosage Information

Adult DosageThe usual adult dose is 5-10 mL (1-2 teaspoons) every 4-6 hours as needed, not to exceed 6 doses in 24 hours. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. Do not exceed the recommended dose.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician. Do not use in children under 2 years of age unless directed by a doctor.
Elderly DosageElderly patients may be more sensitive to the sedative and anticholinergic effects. Start with a lower dose and monitor closely. Dose must be individualized by a qualified clinician.
Renal ImpairmentDose adjustment may be needed in renal impairment. Consult a doctor for individualized dosing.
Hepatic ImpairmentUse with caution in hepatic impairment. Dose adjustment may be needed. Consult a doctor for individualized dosing.
Maximum Daily DoseMaximum daily dose for adults is 60 mL (12 teaspoons) in 24 hours. Do not exceed this dose.

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

🍽️ Food Timing Guide

With food
Take with or without food
Food does not significantly affect absorption.
Grapefruit juice
Avoid
May increase dextromethorphan levels.
Alcohol
Avoid
Increases drowsiness and CNS depression.

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed
→ Take the missed dose as soon as you remember.
💡 Continue with the regular schedule.
📌 More than half the dosing interval has passed
→ Skip the missed dose.
💡 Do not double dose to catch up.

⚠️ Side Effects of xonus-pd syrup

✅ Common Side Effects

Drowsiness (Common (10-20%))
Avoid driving or operating machinery. If persistent, consult your doctor.
Dry mouth (Common (5-15%))
Sip water, chew sugar-free gum, or use saliva substitutes. Consult if severe.
Dizziness (Common (5-10%))
Rise slowly from sitting or lying position. Avoid alcohol.
Nausea (Common (5-10%))
Take with food or milk. Consult if vomiting occurs.
Blurred vision (Uncommon (1-5%))
Avoid driving. Consult if persistent.

🚨 Serious Side Effects

Severe allergic reaction (anaphylaxis) (Rare (<0.1%))
Seek emergency medical help immediately if you experience swelling of face, lips, tongue, or throat, difficulty breathing, or rash.
Hallucinations or confusion (Rare (<0.1%))
Stop the medicine and contact your doctor immediately.
Serotonin syndrome (Rare (<0.1%))
Seek immediate medical attention if you have agitation, fever, sweating, fast heartbeat, or muscle stiffness, especially if taking other serotonergic drugs.
Urinary retention (Rare (<0.1%))
Consult a doctor if you cannot urinate.

⚠️ Rare Side Effects

Blood dyscrasias
Report unusual bruising, bleeding, or fever to your doctor.
Liver enzyme elevation
Report yellowing of eyes or skin, dark urine, or abdominal pain.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
MAOIs Major
CNS depressants Major
SSRIs Major
CYP2D6 inhibitors Moderate
Anticholinergics Moderate
Alcohol Moderate
Grapefruit juice Minor

🚨 Major Interactions

  • Monoamine oxidase inhibitors (MAOIs)
  • CNS depressants (alcohol, benzodiazepines, opioids)
  • Selective serotonin reuptake inhibitors (SSRIs)

⚡ Moderate Interactions

  • CYP2D6 inhibitors (e.g., fluoxetine, paroxetine, quinidine)
  • Anticholinergic drugs (e.g., atropine, tricyclic antidepressants)

🍷 Alcohol Interaction

Alcohol increases the sedative effects of chlorpheniramine and may enhance CNS depression. Avoid alcohol while taking this medicine.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Hypersensitivity to chlorpheniramine, dextromethorphan, or any component of the formulation","Use within 14 days of monoamine oxidase inhibitor therapy","Newborns and premature infants","Narrow-angle glaucoma","Urinary retention or prostatic hypertrophy","Severe liver disease"]

⚠️ Warnings & Precautions

["May cause drowsiness; avoid driving or operating machinery.","Avoid alcohol and other CNS depressants.","Use with caution in elderly patients due to increased risk of confusion and falls.","Use with caution in patients with asthma, COPD, or other respiratory conditions.","Do not use for chronic cough or cough with excessive mucus unless directed by a doctor.","Consult a doctor if symptoms persist beyond 7 days or are accompanied by fever, rash, or persistent headache."]

🤱 Lactation Safety

Chlorpheniramine and dextromethorphan may pass into breast milk. Consult a doctor before use during breastfeeding.

💊 Overdose Management

Overdose may cause severe drowsiness, confusion, hallucinations, seizures, and respiratory depression. Seek emergency medical attention immediately. Treatment is supportive and symptomatic. There is no specific antidote for chlorpheniramine or dextromethorphan. Activated charcoal may be considered if within 1-2 hours of ingestion. Naloxone may be used for respiratory depression if opioid toxicity is suspected.

⏰ Missed Dose

If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose to catch up.

Additional Safety Advice

General Safety

Use this medicine only for short-term relief of cough and allergy symptoms. Do not exceed the recommended dose. Avoid alcohol and other sedating medicines because they increase drowsiness. Do not drive or operate heavy machinery until you know how this medicine affects you. Keep out of reach of children. If you are pregnant, breastfeeding, or have glaucoma, prostate enlargement, or breathing problems, consult a doctor before use. Do not use for chronic cough or cough with excessive mucus unless advised by a clinician.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients are more sensitive to the sedative and anticholinergic effects of chlorpheniramine. They may experience confusion, dizziness, and urinary retention. Use with caution and lower doses may be needed. Consult a doctor.

🤰 Pregnancy Planning (TTC)

If you are planning pregnancy or are pregnant, consult your doctor before taking this medicine. The safety of this combination in pregnancy is not well established.

🏥 Post-Surgery Considerations

Consult your doctor before using this medicine after surgery, as it may interact with anesthetics and other medications. It may also increase the risk of urinary retention.

🦷 Dental Procedures

Inform your dentist if you are taking this medicine, as it may cause dry mouth and interact with sedatives used during dental procedures.

💚 Lifestyle Tips for Better Results

🏃
Stay well hydrated to help thin mucus and soothe your throat.
🥗
Use a humidifier in your room to ease cough and congestion.
😴
Avoid smoking and exposure to secondhand smoke.
💧
Get plenty of rest to support your immune system.
🧘
Wash your hands frequently to prevent spreading infections.
🌞
Avoid allergens that trigger your allergy symptoms.

🏋️ Exercise Considerations

This medicine may cause drowsiness and dizziness. Avoid strenuous exercise or activities requiring alertness until you know how it affects you.

🥗 Diet Recommendations

Drink warm fluids like herbal tea or soup to soothe your throat.
Avoid cold drinks and ice cream which may worsen cough.
Include vitamin C-rich fruits and vegetables.
Avoid spicy and oily foods that may irritate your throat.

💼 Impact on Daily Work & Life

This medicine can cause drowsiness, which may affect your ability to drive, operate machinery, or perform tasks requiring mental alertness. It is best to avoid these activities until you know how the medicine affects you. Inform your employer if your job requires alertness.

🛑 When to Stop This Medicine

Stop taking this medicine and consult a doctor if your symptoms do not improve within 7 days, if they worsen, or if you experience any serious side effects. Do not stop abruptly if you have been taking it for a long time without consulting your doctor.

📅 Long-Term Use Effects

Long-term use of this medicine is not recommended. Prolonged use of chlorpheniramine may lead to tolerance, dependence, and increased risk of side effects such as confusion and urinary retention. Dextromethorphan may cause dependence with prolonged high-dose use. Regular monitoring by a doctor is advised if used for more than a few days.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Saline nasal rinse

Helps relieve nasal congestion and allergy symptoms.

Evidence: Well-established
Honey and warm fluids

Can soothe cough and throat irritation.

Evidence: Limited
Avoiding allergens

Reduces allergy symptoms without medication.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

This medicine does not interact with vaccines. However, if you have a fever or acute illness, consult your doctor before vaccination.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate or freeze

✅ DO

Keep in original container with cap tightly closed

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Keep away from direct sunlight and moisture

❌ DON'T

Do not store in bathroom cabinet

✅ DO

Keep out of reach of children

❌ DON'T

Do not use after expiry date

✈️ Traveling with This Medicine

Carry this medicine in its original packaging with the prescription label intact. Bring a copy of your prescription in case you need to show it at customs. Store it in a cool, dry place away from direct sunlight. If traveling across time zones, continue your regular dosing schedule but consult your doctor if you need adjustments. Do not leave it in a hot car.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 35-year-old woman with seasonal allergies and dry cough
She was prescribed this medicine for her cough and sneezing. She took it as directed and found relief within 30 minutes. She experienced mild drowsiness, so she avoided driving. She stopped the medicine after 5 days when symptoms resolved.
💡 Lesson: This medicine provides effective short-term relief but can cause drowsiness; avoid driving until you know its effects.
👤 A 70-year-old man with a persistent cough
He took this medicine for a week but continued to cough. He also felt confused and dizzy. His doctor advised stopping the medicine and evaluated him for other causes. The cough was due to acid reflux, which required different treatment.
💡 Lesson: Persistent cough lasting more than a week should be evaluated by a doctor; this medicine is not for long-term use and may cause confusion in the elderly.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine usually starts working within 30-60 minutes after taking a dose.

Q: How long can I take this medicine?

A: It is intended for short-term use, typically not more than 7 days, unless directed by a doctor.

Q: Can I take this medicine if I am pregnant?

A: Consult your doctor before use. The safety in pregnancy is not well established.

Q: Can I take this medicine with other cold medicines?

A: Avoid taking with other medicines that contain similar ingredients to prevent overdose. Consult your doctor or pharmacist.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine long-term?
  • Will it affect my kidney or liver?
  • Can I drive after taking this medicine?
  • Does it interact with my blood pressure medicine?
  • What if I miss a dose?
  • Can I drink alcohol while taking this?
  • Is it safe for my child?
  • Can I take it with other cold medicines?

🛑 Myths vs. Facts

  • Myth: This medicine can cure the underlying infection.
    Fact: This medicine only relieves symptoms; it does not treat the underlying cause.
  • Myth: It is safe to take with alcohol.
    Fact: Alcohol increases drowsiness and should be avoided.
  • Myth: It can be used for any type of cough.
    Fact: It is intended for dry cough and allergy symptoms, not for cough with excessive mucus.

🔄 Alternative Options

Generic Alternatives

  • Chlorpheniramine maleate + dextromethorphan hydrobromide syrup (generic)

📊 Comparison with Similar Medicines

[{"medicine":"This medicine","composition":"Chlorpheniramine 4 mg + Dextromethorphan 5 mg per 5 mL","use":"Cough and allergy symptoms","sedation":"Moderate to high"},{"medicine":"Dextromethorphan alone","composition":"Dextromethorphan 5-10 mg per 5 mL","use":"Dry cough","sedation":"Low"},{"medicine":"Chlorpheniramine alone","composition":"Chlorpheniramine 2-4 mg per 5 mL","use":"Allergy symptoms","sedation":"Moderate to high"}]

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