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Generic

Dextromethorphan Polistirex Extended Release Suspension

1 brands available in the market

At a glance

Dextromethorphan Polistirex Extended Release Suspension is a long-acting cough suppressant used for the treatment of dry cough.

Description

Dextromethorphan Hydrobromide is a cough suppressant which has a central action on the cough centre in the medulla. Polistirex forms a matrix around the Dextromethorphan particles, which slows down the dissolution of the Dextromethorphan in the gastrointestinal tract, leading to a gradual and prolonged release into the bloodstream. The duration of action is 12 hours with extended release suspension dosage form.

Indications
  • Chronic dry cough
  • Unproductive cough
  • Acute dry cough interfering with normal function or sleep
Therapeutic class

Cough suppressant

Pharmacological class

Long-acting Antitussive

Pharmacology

Dextromethorphan Hydrobromide is a cough suppressant which has a central action on the cough centre in the medulla. Polistirex forms a matrix around the Dextromethorphan particles, which slows down the dissolution of the Dextromethorphan in the gastrointestinal tract, leading to a gradual and prolonged release into the bloodstream. The duration of action is 12 hours.

Mechanism of action

Dextromethorphan acts on the medullary cough centre to suppress cough; Polistirex matrix ensures prolonged release of dextromethorphan, maintaining efficacy for up to 12 hours.

Dosage

Adults and children ≥12 years: 10 ml every 12 hours (max 20 ml in 24 hours).
Children (6-12 years): 5 ml every 12 hours (max 10 ml in 24 hours).
Children (4-6 years): 2.5 ml every 12 hours (max 5 ml in 24 hours).
Children under 4 years: Not recommended.

Administration

Measure with a measuring cup, shake well before use. May be taken with or without food.

Missed dose

If you miss a dose, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose. Do not double the dose.

Side effects

Rare: Nausea, dizziness.
Overdose: Excitement, confusion, respiratory depression.

Precautions & warnings

Use with caution in patients with liver disease (dextromethorphan is extensively metabolized in the liver). Do not use with MAOIs.

Contraindications

Concomitant use with MAOIs.

Drug interactions

Phenelzine: Two fatal interactions have been reported with therapeutic doses of phenelzine and dextromethorphan.

Food interactions

Can be taken with or without food.

Use in pregnancy

Avoid during the first three months of pregnancy.

Pregnancy Category: C — always consult a doctor before taking during pregnancy.

Use in lactation

No information is available on secretion of dextromethorphan into breast milk; nursing mothers should be advised not to take the drug.

Pediatric use

Not recommended for children under 4 years of age.

Geriatric use

No specific dosage adjustment is necessary for elderly patients.

Renal / hepatic impairment

Caution is advised in patients with liver disease.

Overdose effects

Overdose may cause excitement, confusion, and respiratory depression. Seek medical attention.

Storage conditions

Store below 30°C in dry place. Keep away from light. Keep out of reach of children.

Chemical structure

Dextromethorphan Polistirex Extended Release Suspension

Common questions

What is this suspension used for?
It is used for the treatment of dry cough.
What is the dosage?
≥12 years: 10 ml every 12 hours; 6-12 years: 5 ml; 4-6 years: 2.5 ml.
What are the common side effects?
Nausea, dizziness (rare); overdose may cause excitement, confusion.
Who should not use it?
Patients taking MAOIs, children under 4 years.
Can it be used during pregnancy?
Avoid during the first 3 months.
⚠️ This information is for educational purposes only — not a substitute for medical advice. Consult a registered physician before taking any medicine.