normovent syrup - Chlorpheniramine Maleate (NA) + Codeine (NA) medicine

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🏭 Alkem Laboratories Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Oct 30, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for the individual ingredients in their respective indications.
Reviewed by
SaathiMed Expert Panel | Oct 30, 2026
🩺
Medically Fact-Checked & Clinically Verified by SaathiMed Clinical Review Board
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026

When to Call Your Doctor IMMEDIATELY

  • Slow, shallow, or difficult breathing
  • Severe drowsiness or difficulty waking up
  • Confusion or unusual behavior
  • Seizures
  • Signs of allergic reaction such as swelling of face, lips, or throat
  • Irregular heartbeat or palpitations
  • Severe abdominal pain or constipation

If experiencing severe symptoms, call emergency services immediately.

What is normovent syrup used for?

This medicine is a prescription syrup containing chlorpheniramine maleate and codeine. It is used to treat dry cough and allergy symptoms. It works by blocking histamine and suppressing the cough reflex. It is not for children under 12 years and should not be taken with alcohol.

  • Generic Name: Chlorpheniramine Maleate (NA) + Codeine (NA)
  • Manufacturer: Alkem Laboratories Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 normovent syrup के बारे में (Hindi Summary)

उपयोग: यह दवा एक प्रिस्क्रिप्शन सिरप है जिसमें क्लोरफेनिरामाइन मेलिएट और कोडीन शामिल हैं। इसका उपयोग सूखी खांसी और एलर्जी के लक्षणों जैसे नाक बहना, छींक आना और आंखों में खुजली को कम करने के लिए किया जाता है। यह दवा 12 वर्ष से कम उम्र के बच्चों के लिए नहीं है। इसे डॉक्टर के परामर्श के बिना न लें।

साइड इफेक्ट्स: आम दुष्प्रभावों में नींद आना, चक्कर आना, मुंह सूखना, जी मिचलाना, कब्ज और धुंधली दृष्टि शामिल हैं। गंभीर दुष्प्रभावों में सांस लेने में कठिनाई, तेज नींद आना, भ्रम, बेहोशी और एलर्जी की प्रतिक्रिया शामिल हो सकती है। यदि कोई गंभीर लक्षण दिखे तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा को डॉक्टर के बताए अनुसार ही लें। खुराक न बढ़ाएं। इस दवा को लेने के बाद गाड़ी चलाने या मशीन चलाने से बचें क्योंकि इससे नींद आ सकती है। शराब का सेवन न करें। 12 वर्ष से कम उम्र के बच्चों को यह दवा न दें। इसे बच्चों की पहुंच से दूर रखें।

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

💊 normovent syrup Uses & Benefits

[{"condition":"Dry cough","description":"This medicine is used to suppress dry, irritating cough that does not produce mucus.","evidence":"Well-established"},{"condition":"Allergic rhinitis","description":"It helps relieve runny nose, sneezing, and itchy, watery eyes caused by allergies.","evidence":"Well-established"},{"condition":"Common cold symptoms","description":"It may be used to reduce cough and allergy-like symptoms associated with the common cold.","evidence":"Moderate"}]

Off-label uses: [{"condition":"Pain relief","description":"Codeine in this medicine may provide mild to moderate pain relief, but this is not a primary approved use.","evidence":"Limited"}]

Primary treatment for: Dry cough and allergic rhinitis

Also treats: Common cold, Allergic conjunctivitis

📋 Drug Information

Generic Name(s)Chlorpheniramine Maleate (NA) + Codeine (NA)
Brand Namenormovent syrup
ManufacturerAlkem Laboratories Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassRESPIRATORY
Action Class
Route of AdministrationOral
StorageStore at room temperature between 15°C and 30°C (59°F to 86°F). Protect from light and moisture. Keep the bottle tightly closed.
Shelf LifeNot established from the available information. Refer to the product label for the expiry date.
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
Always prescribe this medicine only for dry cough and allergy symptoms, and for the shortest duration possible.
2
Warn patients about drowsiness and advise them not to drive or operate machinery.
3
Screen for a history of substance abuse before prescribing codeine-containing products.
4
Avoid prescribing this medicine to children under 12 years due to the risk of fatal respiratory depression.
5
Instruct patients not to combine this medicine with alcohol or other sedatives.
6
Monitor elderly patients closely for excessive sedation and respiratory depression.
7
Advise patients to use a proper measuring device to avoid dosing errors.

🔍 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
This medicine helps relieve runny nose due to allergies.
Likely Use
❌
Productive cough with mucus
This medicine is not for productive cough; it may make it harder to clear mucus.
Not Primary
❌
Fever
This medicine is not a primary fever reducer.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionChlorpheniramine maleate is absorbed from the gastrointestinal tract. Codeine is also absorbed from the gastrointestinal tract. The exact absorption characteristics of this specific syrup formulation are not established from the available information.
DistributionChlorpheniramine maleate distributes widely into body tissues and crosses the blood-brain barrier. Codeine also distributes into tissues and crosses the blood-brain barrier and placenta. The exact distribution parameters for this specific product are not established from the available information.
Protein BindingChlorpheniramine maleate is approximately 70% bound to plasma proteins. Codeine is approximately 25% bound to plasma proteins. These values are for the individual ingredients and may not reflect the combination product exactly.
MetabolismChlorpheniramine maleate is metabolized in the liver, primarily by cytochrome P450 enzymes. Codeine is metabolized in the liver by CYP2D6 and CYP3A4 to morphine and other metabolites. The metabolism of this specific combination syrup is not established from the available information.
Half-LifeThe elimination half-life of chlorpheniramine maleate is approximately 12 to 43 hours. The elimination half-life of codeine is approximately 2.5 to 3 hours. These values are for the individual ingredients.
ExcretionChlorpheniramine maleate and its metabolites are excreted mainly in the urine. Codeine and its metabolites are excreted primarily in the urine, with small amounts in feces. The excretion profile of this specific combination product is not established from the available information.
BioavailabilityThe bioavailability of chlorpheniramine maleate is approximately 25% to 50%. The bioavailability of codeine is approximately 50% to 90%. These values are for the individual ingredients and may vary with the formulation.
Onset of ActionThe onset of action for chlorpheniramine maleate is typically within 30 to 60 minutes. The onset of action for codeine is typically within 30 to 60 minutes. The onset of action for this specific syrup is not established from the available information.
Peak Plasma TimeThe peak plasma time for chlorpheniramine maleate is approximately 2 to 6 hours. The peak plasma time for codeine is approximately 1 hour. These values are for the individual ingredients.
Duration of ActionThe duration of action for chlorpheniramine maleate is approximately 4 to 6 hours. The duration of action for codeine is approximately 4 to 6 hours. The duration of action for this specific syrup is not established from the available information.

How It Works

This medicine contains two active ingredients. Chlorpheniramine maleate is a first-generation antihistamine that competes with histamine for H1 receptors on effector cells in the gastrointestinal tract, blood vessels, and respiratory tract. By blocking histamine, it reduces allergy symptoms such as sneezing, runny nose, and itching, and it also has anticholinergic effects that help dry respiratory secretions. Codeine is an opioid agonist that acts primarily on mu-opioid receptors in the central nervous system. It suppresses the cough reflex in the medulla and also reduces pain perception. The combination provides cough suppression along with relief of allergy symptoms.

Mechanism Steps

1
Histamine H1 receptor blockade: Chlorpheniramine maleate binds to histamine H1 receptors on cells in the nose, eyes, and airways, preventing histamine from triggering allergy symptoms.
2
Anticholinergic action: Chlorpheniramine maleate also blocks acetylcholine receptors, which reduces secretions in the respiratory tract and helps dry up a runny nose.
3
Opioid receptor activation: Codeine binds to mu-opioid receptors in the brain and spinal cord, which reduces pain signals and suppresses the cough reflex.
4
Cough reflex suppression: Codeine acts on the cough center in the medulla oblongata to reduce the sensitivity of the cough reflex, providing relief from dry cough.

💡 How to Take normovent syrup

Strength: This medicine is an oral syrup. The exact strength of chlorpheniramine maleate and codeine in this product is not established from the available information.

1Shake the bottle well before each use.
2Use a proper measuring device (oral syringe or measuring cup) to measure the dose accurately.
3Take the medicine orally, with or without food.
4Do not take more than the prescribed dose.
5After taking, close the bottle tightly and store as directed.

Dosage Information

Adult DosageThe usual adult dose of this medicine is 5 mL to 10 mL (one to two teaspoons) taken every 4 to 6 hours as needed for cough and allergy symptoms, not to exceed 6 doses in 24 hours. However, the exact dose must be individualized by a qualified clinician based on the indication, age, weight, renal and hepatic function, and response to treatment. Do not self-medicate. Follow your doctor's prescription exactly.
Pediatric DosagePediatric dosing is not established from available information. This medicine is contraindicated in children under 12 years of age due to the risk of life-threatening respiratory depression. Consult a pediatrician for appropriate treatment.
Elderly DosageElderly patients (above 65 years) are more sensitive to the effects of chlorpheniramine maleate and codeine. Use with caution and at the lowest effective dose. Dose must be individualized by a qualified clinician based on renal and hepatic function and overall health status.
Renal ImpairmentDose adjustment may be required in patients with kidney disease. Consult a qualified clinician for individualized dosing.
Hepatic ImpairmentDose adjustment may be required in patients with liver disease. Consult a qualified clinician for individualized dosing.
Maximum Daily DoseThe maximum daily dose is not established from the available information. Do not exceed the dose prescribed by your doctor.

Dosage Timeline

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

🍽️ Food Timing Guide

With food
Take with or without food
Food does not significantly affect absorption.
Alcohol
Avoid
Increases sedation and respiratory depression.
Grapefruit juice
Avoid or limit
May increase drug levels and side effects.

⏰ 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 normovent syrup

✅ Common Side Effects

Drowsiness (Common (more than 10%))
Avoid driving or operating machinery. If drowsiness is severe, consult your doctor.
Dry mouth (Common (more than 10%))
Sip water or chew sugarless gum. Consult doctor if it persists.
Dizziness (Common (5-10%))
Rise slowly from sitting or lying position. Avoid sudden movements.
Nausea (Common (5-10%))
Take with food or milk. Consult doctor if it continues.
Constipation (Common (5-10%))
Increase fiber and fluid intake. Consult doctor if it persists.

🚨 Serious Side Effects

Respiratory depression (Rare but serious)
Seek immediate medical attention if you notice slow, shallow breathing or difficulty breathing.
Severe allergic reaction (Rare)
Stop the medicine and seek emergency help if you experience swelling of the face, lips, tongue, or throat, or difficulty breathing.
Severe drowsiness or confusion (Uncommon)
Do not drive or operate machinery. Contact your doctor immediately if you become unusually drowsy or confused.
Irregular heartbeat (Rare)
Seek immediate medical attention if you feel palpitations or faint.

⚠️ Rare Side Effects

Blood disorders
Report unusual bruising, bleeding, or signs of infection to your doctor.
Liver problems
Report yellowing of skin or eyes, dark urine, or abdominal pain to your doctor.
Seizures
Seek emergency medical help if seizures occur.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
MAOIs Major
Benzodiazepines Major
Alcohol Major
CYP2D6 inhibitors Moderate
Anticholinergics Moderate
Sedating antihistamines Moderate
Muscle relaxants Moderate
Antacids Minor
Caffeine Minor
Opioid antagonists Major

🚨 Major Interactions

  • Monoamine oxidase inhibitors (MAOIs)
  • Other central nervous system depressants (e.g., benzodiazepines, alcohol, opioids)
  • CYP2D6 inhibitors (e.g., fluoxetine, paroxetine, quinidine)

⚡ Moderate Interactions

  • Anticholinergic drugs (e.g., atropine, benztropine)
  • Sedating antihistamines (e.g., diphenhydramine)
  • Muscle relaxants

🍷 Alcohol Interaction

Do not drink alcohol while taking this medicine. Alcohol increases the sedative and respiratory depressant effects of codeine and chlorpheniramine, which can lead to severe drowsiness, breathing difficulties, and even death.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Children under 12 years of age","Known allergy to chlorpheniramine maleate, codeine, or any component of the formulation","Severe respiratory depression or acute asthma attack","Paralytic ileus or severe constipation","Use with MAO inhibitors or within 14 days of stopping MAO inhibitors","Breastfeeding"]

⚠️ Warnings & Precautions

["May cause drowsiness; avoid driving or operating machinery.","Do not use with alcohol or other CNS depressants.","Codeine can cause dependence and withdrawal; use only as prescribed.","Risk of respiratory depression; use with caution in the elderly and those with lung disease.","Do not use in children under 12 years due to risk of fatal breathing problems.","Use with caution in patients with liver or kidney disease.","Do not use for chronic cough without medical evaluation.","Keep out of reach of children."]

🤱 Lactation Safety

Chlorpheniramine maleate and codeine pass into breast milk. Codeine can cause serious breathing problems in a breastfed infant. Breastfeeding is not recommended while taking this medicine. Consult your doctor for alternative options.

💊 Overdose Management

Overdose can cause severe drowsiness, slow or shallow breathing, cold and clammy skin, seizures, and coma. Seek emergency medical help immediately. Treatment may include supportive care, airway management, and administration of naloxone, an opioid antagonist. Do not induce vomiting unless instructed by a healthcare professional.

⏰ 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 take a double dose to make up for a missed one.

Additional Safety Advice

General Safety

Take this medicine exactly as prescribed by your doctor. Do not increase the dose or take it more often than directed. Avoid driving or operating heavy machinery until you know how this medicine affects you, as it can cause drowsiness. Do not drink alcohol while taking this medicine because it can increase drowsiness and breathing problems. Do not use this medicine for a dry cough that lasts more than 7 days without consulting your doctor. Keep this medicine out of the reach of children. Do not share this medicine with anyone else, especially children. If you are pregnant, planning pregnancy, or breastfeeding, talk to your doctor before taking this medicine. Tell your doctor about all other medicines you are taking, especially sedatives, antidepressants, and pain relievers.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients are more sensitive to the sedative and respiratory depressant effects of this medicine. Use with caution, at the lowest effective dose, and monitor closely for confusion, falls, and breathing difficulties.

🤰 Pregnancy Planning (TTC)

This medicine is not recommended during pregnancy or when planning pregnancy. Codeine and chlorpheniramine may harm the fetus. Consult your doctor for safer alternatives.

🏥 Post-Surgery Considerations

This medicine may increase the risk of respiratory depression after surgery. Inform your surgeon and anesthesiologist if you are taking this medicine. It may need to be stopped before surgery.

🦷 Dental Procedures

Inform your dentist if you are taking this medicine, as it can cause dry mouth and increase the risk of dental problems. It may also 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 keep the air moist.
😴
Avoid exposure to allergens such as dust, pollen, and pet dander.
💧
Get plenty of rest to help your body recover.
🧘
Avoid smoking and secondhand smoke.
🌞
Practice good hand hygiene to prevent infections.

🏋️ Exercise Considerations

Avoid strenuous exercise or activities requiring alertness while taking this medicine, as it can cause drowsiness and dizziness. Light activities are fine if you feel well.

🥗 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 honey in warm water to help relieve cough.
Eat a balanced diet rich in vitamins and minerals to support your immune system.

💼 Impact on Daily Work & Life

This medicine can cause significant drowsiness and dizziness, 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 such activities.

🛑 When to Stop This Medicine

Stop taking this medicine and consult your doctor if your cough persists for more than 7 days, if you develop a fever, rash, or difficulty breathing, or if you experience severe side effects. Do not stop suddenly if you have been taking it for a long time without consulting your doctor, as withdrawal symptoms may occur.

📅 Long-Term Use Effects

Long-term use of this medicine can lead to dependence on codeine, tolerance, and withdrawal symptoms. It may also cause chronic constipation, drowsiness, and cognitive impairment. Regular monitoring by a doctor is required if prolonged use is necessary. Do not stop suddenly without medical advice.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Dextromethorphan

A non-opioid cough suppressant that can be used for dry cough without the risk of dependence.

Evidence: Well-established
Lozenges and throat syrups

Can soothe the throat and reduce cough without systemic side effects.

Evidence: Moderate
Saline nasal spray

Helps relieve nasal congestion and allergy symptoms without sedation.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

There are no known interactions between this medicine and vaccines. However, if you are scheduled for vaccination, inform your healthcare provider about all medicines you are taking.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate unless specified

✅ DO

Keep in original container

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Keep away from direct sunlight

❌ DON'T

Do not store in bathroom cabinet

✈️ Traveling with This Medicine

When traveling, carry this medicine in its original packaging along with a copy of your prescription. Codeine-containing medicines may be subject to customs regulations in some countries, so check local laws before travel. Store at room temperature and protect from light and moisture. If crossing time zones, continue your regular dosing schedule as prescribed, but do not exceed the maximum daily dose. Keep the medicine in your carry-on luggage if flying.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 35-year-old woman with a persistent dry cough and runny nose
She was prescribed this medicine for 5 days. She noticed significant relief in her cough and allergy symptoms within the first day. She experienced mild drowsiness, so she took it at bedtime. She was advised not to drive after taking it.
💡 Lesson: Taking this medicine at bedtime can help manage drowsiness while providing relief from cough and allergy symptoms.
👤 A 70-year-old man with a history of hypertension and mild kidney disease
He was prescribed this medicine for a dry cough. After two doses, he became unusually drowsy and confused. His family contacted the doctor, who advised stopping the medicine and adjusting the dose. He recovered fully after discontinuation.
💡 Lesson: Elderly patients are more sensitive to the sedative effects of this medicine. Close monitoring and dose adjustment are essential.

💬 Questions Patients Often Ask

Q: How long does it take to work?

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

Q: How long can I take this medicine?

A: This medicine should only be used for a short period, typically not more than 7 days, unless directed by your doctor. Prolonged use can lead to dependence.

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

A: You should not take this medicine with other cold medicines without consulting your doctor, as they may contain similar ingredients and increase the risk of side effects.

Q: Is this medicine safe for children?

A: No, this medicine is not safe for children under 12 years of age due to the risk of life-threatening breathing problems.

Q: Can I drink alcohol while taking this medicine?

A: No, you should not drink alcohol while taking this medicine as it can increase drowsiness and the risk of serious breathing problems.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine long-term?
  • Will it affect my kidney function?
  • 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 this medicine safe for my child?
  • Can I take this medicine during pregnancy?

🔄 Substitutes for normovent syrup

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: This medicine is safe for children.
    Fact: This medicine is contraindicated in children under 12 years due to the risk of life-threatening breathing problems.
  • Myth: This medicine can be taken for any type of cough.
    Fact: This medicine is only for dry cough. It should not be used for cough with mucus (productive cough) as it can make it harder to clear secretions.
  • Myth: It is safe to take this medicine with alcohol.
    Fact: Alcohol increases the sedative and respiratory depressant effects of this medicine and can be dangerous.

🔄 Alternative Options

Generic Alternatives

  • Chlorpheniramine maleate + codeine syrup (generic)

📊 Comparison with Similar Medicines

[{"medicine":"This medicine","active_ingredients":"Chlorpheniramine maleate + codeine","primary_use":"Dry cough and allergy symptoms","sedation":"High","dependence":"Moderate"},{"medicine":"Dextromethorphan + chlorpheniramine","active_ingredients":"Dextromethorphan + chlorpheniramine","primary_use":"Dry cough and allergy symptoms","sedation":"Moderate","dependence":"Low"},{"medicine":"Codeine + guaifenesin","active_ingredients":"Codeine + guaifenesin","primary_use":"Productive cough","sedation":"High","dependence":"Moderate"}]

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