Nam Cold Syrup 100 Syrup

Nam Cold Syrup 100 Syrup is a prescription combination medicine containing three active ingredients: Chlorpheniramine Maleate, Dextromethorphan, and Guaifenesin. Chlorpheniramine is a first-generation antihistamine that relieves allergy-related symptoms such as sneezing and runny nose. Dextromethorphan is a cough suppressant that reduces the tendency to cough by acting on the cough centre in the brain, especially in dry or irritating coughs. Guaifenesin is an expectorant that helps loosen and thin mucus (phlegm) in the airways, making it easier to cough out and clear chest congestion. Together, these ingredients provide relief from cough associated with colds, allergies, throat irritation, and upper respiratory tract infections, while also helping improve mucus clearance and breathing comfort when used as directed by a physician.

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Written by: Syed Jommy Abbas, B. Pharma

Reviewed by: Dr. Rohit Kolhe, MBBS

Last updated on: 27-05-2026

Nam Cold Syrup 100 Syrup
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More About Nam Cold Syrup 100 Syrup

Detailed Description

Nam Cold Syrup 100 Syrup contains three active ingredients each contributing a specific therapeutic action in the management of cough and cold.

Composition and Mechanism: Nam Cold Syrup 100 Syrup contains Chlorpheniramine Maleate, Dextromethorphan, and Guaifenesin. Chlorpheniramine Maleate is an antihistamine that helps relieve allergy symptoms such as sneezing, runny nose, itching, and throat irritation by blocking histamine's action. Dextromethorphan is a cough suppressant that acts on the cough centre in the brain to reduce coughing. Guaifenesin is an expectorant that helps loosen and thin mucus (phlegm), making it easier to clear from the airways and helping relieve chest congestion.

Major Therapeutic Uses: Nam Cold Syrup 100 Syrup is primarily indicated for the symptomatic relief of cough associated with the common cold, allergic rhinitis, upper respiratory tract infections, and throat irritation. It helps reduce frequent or irritating cough, relieve allergy-related symptoms, and improve clearance of respiratory secretions.

Benefits, Precautions, and Medical Supervision: This combination helps relieve both a dry, irritating cough and a cough associated with mucus (phlegm). It provides symptomatic relief but does not treat the underlying infection itself. This medicine may cause drowsiness, dizziness, or impaired alertness, so avoid alcohol, driving, or operating machinery unless advised otherwise by a doctor. Use only as prescribed, especially in children and elderly patients.

Uses of Nam Cold Syrup 100 Syrup

Nam Cold Syrup 100 Syrup is indicated by a doctor for:

Cough Associated with Upper Respiratory Infections

Symptomatic relief of cough associated with the common cold, flu, or upper respiratory tract infections, including irritating cough with or without mild mucus production.

Allergic Rhinitis with Cough

Management of allergy-related symptoms such as sneezing, runny nose, watery eyes, and associated cough in patients with seasonal or perennial allergic rhinitis.

Chest Congestion with Mucus (Phlegm)

Helps loosen and thin mucus in the airways, making it easier to clear phlegm and relieve chest congestion associated with respiratory tract infections and cough.

Benefits of Nam Cold Syrup 100 Syrup

  • Relief in Both Dry and Wet Cough: Helps reduce dry, irritating cough and also loosens mucus (phlegm), making it easier to clear chest congestion.
  • Improves Sleep Quality: By reducing cough and allergic symptoms, and with the mild sedative effect of Chlorpheniramine, it helps promote restful sleep at night.
  • Non-Opioid Cough Suppression: Dextromethorphan provides effective cough relief without the respiratory depression or dependence risk associated with opioid antitussives at recommended doses.

Side Effects of Nam Cold Syrup 100 Syrup

When taken as directed, Nam Cold Syrup 100 Syrup is generally well tolerated. Side effects, if they occur, are usually mild and temporary.

Common Side Effects
  • Drowsiness or Sleepiness: May affect alertness and concentration.
  • Dizziness: Light-headedness may occur in some individuals.
  • Dry Mouth: Can occur due to the antihistamine component.
  • Nausea or Stomach Discomfort
Uncommon Side Effects
  • Blurred Vision
  • Difficulty Passing Urine
  • Restlessness or Nervousness
  • Mild Skin Rash or Itching
  • Confusion, especially in elderly patients
Serious Side Effects (Require Immediate Medical Attention):
  • Breathing Difficulty or Wheezing
  • Severe Drowsiness or Confusion
  • Severe Allergic Reactions such as swelling of face, lips, tongue, or throat
  • Fainting or Loss of Consciousness
  • Persistent Vomiting

Directions for Use

  • Nam Cold Syrup 100 Syrup is commonly available as a liquid syrup. It should be measured using a dosing cup or spoon for accurate dosing.
  • This medication should be taken exactly as prescribed by your physician. It is usually taken every 4–6 hours as prescribed by the doctor. You should not exceed 3 doses in 24 hours. Avoid self-medication or sharing this medicine with others.

How it works

Chlorpheniramine Maleate is a first-generation antihistamine that blocks histamine H1 receptors. Histamine is involved in allergic reactions and is responsible for symptoms such as sneezing, a runny nose, watery eyes, and itching. By blocking histamine's action, Chlorpheniramine helps relieve these allergy-related symptoms. Since it can cross the blood–brain barrier, it may also cause mild drowsiness or sedation in some patients.

Dextromethorphan is a cough suppressant that acts on the cough centre in the brain to reduce the urge to cough. It helps reduce cough frequency and irritation while allowing normal breathing to continue. It is a non-opioid antitussive and is generally considered safe when used at recommended doses, although excessive use may be harmful.

Guaifenesin is an expectorant that helps loosen and thin mucus (phlegm) in the airways. This makes mucus easier to cough out and helps clear chest congestion. By improving mucus clearance, it may help make breathing more comfortable in patients with a cough associated with respiratory tract irritation or infections.

Safety Advice for Nam Cold Syrup 100 Syrup

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Breastfeeding
Caution

Chlorpheniramine may pass into breast milk. Consult your doctor before use while breastfeeding.

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Pregnancy
Caution

Consult your doctor before use. This medicine should be used during pregnancy only when clearly needed.

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Driving
Caution

This medicine may cause drowsiness or reduced alertness. Avoid driving if you feel sleepy.

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Alcohol
Unsafe

Alcohol may increase drowsiness and other side effects. It is best avoided while taking this medicine.

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Liver
Caution

Dose adjustment may be required with severe liver disease.

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Kidney
Caution

Consult your doctor if you have a history of impaired kidney function.

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Children
Caution

May be more sensitive to side effects such as excessive drowsiness or breathing difficulty.

Quick Tips for Nam Cold Syrup 100 Syrup

  • Do Not Exceed the Recommended Dose: Taking more than prescribed, especially Dextromethorphan, may cause serious brain effects like dissociation and poor coordination. Always follow your doctor’s advice.
  • Supportive Care for Nasal Congestion: Drinking warm fluids like hot water and inhaling steam may help loosen mucus and relieve nasal congestion, making breathing easier.
  • Inform Your Doctor of All Medicines: Always share your complete medication list with your healthcare provider before starting treatment.
  • Check Other Labels: Many "over-the-counter" cold medicines contain these same ingredients. Check labels to avoid an accidental overdose.

Drug-Food Interaction

Nam Cold Syrup 100 Syrup may be taken with or without food. Taking it after food may help reduce mild stomach discomfort or nausea.

  • Alcohol: Alcohol may increase drowsiness, dizziness, and reduced alertness caused by this medicine. Avoid alcohol while taking this medication.
  • Caffeine (Mild): Caffeine may partially counteract the sedative effects of Chlorpheniramine but does not alter the antitussive activity of Dextromethorphan.

Interactions with Other Drugs

  • MAO Inhibitors (Severe): Taking these medicines together may increase the risk of serious side effects and should be avoided.
  • Antidepressants (Caution): Some antidepressants, especially tricyclic antidepressants and SSRIs, may increase the side effects of Dextromethorphan or Chlorpheniramine.
  • Other Antihistamines or Sedatives (Moderate): Combined use with sedating antihistamines, sleeping pills, benzodiazepines, or other CNS depressants may increase drowsiness and reduce alertness.

Drug-Disease Interactions

  • Asthma or Chronic Obstructive Pulmonary Disease (COPD) (Moderate to Severe): Dextromethorphan may suppress cough, which may make mucus clearance more difficult in some patients with chronic airway disease. Use only under medical supervision in patients with asthma or COPD.
  • Liver Impairment (Moderate): Dextromethorphan is metabolized in the liver. Impaired liver function may increase the effects or side effects of the medicine.
  • Narrow-Angle Glaucoma (Moderate): Chlorpheniramine may increase eye pressure and should be used cautiously in patients with glaucoma.
  • Benign Prostatic Hyperplasia (Moderate): Chlorpheniramine may increase the risk of difficulty in passing urine, especially in elderly patients.

Overdose

Always follow the prescribed dose. Taking more than the recommended amount of this medicine may cause excessive drowsiness, dizziness, confusion, nausea, vomiting, restlessness, or difficulty breathing. In severe cases, serious sedation, loss of consciousness, or breathing problems may occur. Seek immediate medical attention if an overdose is suspected.

What If You Forget to take Nam Cold Syrup 100 Syrup?

Since Nam Cold Syrup 100 Syrup is typically taken as prescribed by a doctor, a missed dose is usually not critical. If taken on a schedule, take the missed dose as soon as you remember, unless the next dose is due within 2 hours, then you can skip it. Never double the dose.

FAQ

Fact Box

Therapeutic Class

Respiratory / Cough and Allergy Relief

Action Class

H1-Receptor Antagonist + Centrally Acting Cough Suppressant + Expectorant

Chemical Class

Antihistamine + Non-Opioid Antitussive + Expectorant

Habit Forming

No (at recommended doses)

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