Dhasedyl DM Syrup

Brand Actavis
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Dr. Mohd Izzat Amir Bin Awang
Reviewed byDr. Mohd Izzat Amir Bin AwangDoctor of Medicine (MD), University of Mansoura - Manchester
Dr. Adeline Carol Peters
Written byDr. Adeline Carol PetersBachelor of Medicine and Bachelor of Surgery (MBBS) — Manipal Academy of Higher Education (MAHE)

Last updated:

Overview

Dhasedyl DM Syrup is a syrup with Dextromethorphan Hydrobromide declared as its active content. It is supplied in a pack size of 100ml.

This is a non-prescription product and can be purchased without a prescription. Only product, safety and handling details are published on this page.

An online consultation with a DoctorOnCall doctor or pharmacist is available for this product, and a registered pharmacist reviews each order before dispatch to Malaysia or Singapore. Follow the directions on the label and on the leaflet inside the pack.

Directions for Use

Shake the bottle well before use and measure the dose using the measuring cup or spoon provided; take the dose by mouth, generally every 4-6 hours as needed, or as directed by a pharmacist or doctor; do not exceed the recommended frequency or duration of use.

Dosage

Dosing is age-dependent and should follow the product label or a pharmacist’s/doctor’s advice; this syrup is generally not recommended for young children without medical guidance due to the sedating antihistamine component; adults should not exceed the maximum daily dose stated on the packaging.

Storage Instructions

Store below 30°C in a cool, dry place away from direct sunlight; keep the bottle tightly closed; keep out of reach of children.

Side Effects

  • Drowsiness or dizziness
  • Nausea or vomiting
  • Stomach discomfort
  • Mild confusion (especially at high doses)
  • Dry mouth

Contraindications

  • Known hypersensitivity to dextromethorphan, diphenhydramine, or other ingredients in the syrup
  • Use together with monoamine oxidase inhibitors (MAOIs) or within 14 days of stopping them
  • Severe respiratory conditions such as asthma with excessive mucus, unless directed by a doctor
  • Young children, without pharmacist or doctor guidance
  • Persons who need to remain alert (e.g. before driving or operating machinery), due to sedation risk

Drug / Food Interactions

  • Increased sedation when combined with alcohol, sedatives, or other antihistamines
  • Risk of serious interaction (serotonin syndrome-like reactions) with MAOIs or certain antidepressants (e.g. SSRIs) combined with dextromethorphan
  • May enhance the sedative effect of other central nervous system depressants
  • Avoid combining with other cough/cold products containing similar ingredients to prevent overdose

Quick Tips

  • Avoid driving or operating machinery after taking this syrup due to possible drowsiness
  • Do not combine with other over-the-counter cough or cold medicines without checking ingredients
  • Consult a pharmacist before giving to children
  • Seek medical advice if cough persists beyond 7 days, or is accompanied by fever, rash, or persistent headache

Ingredients / Active Ingredients

  • Dextromethorphan Hydrobromide
  • Diphenhydramine Hydrochloride
  • Other syrup excipients (flavouring, sweetening, and preservative agents) as formulated by the manufacturer

Safety Advice

Pregnancy

Safe If Prescribed

This medicine should only be used during pregnancy if prescribed by a doctor after careful evaluation.

Breastfeeding

Limited Data

Limited data on excretion in breast milk. Consult a doctor before use.

Kidney

Generally Safe

Generally safe, but caution may be required in some patients.

Liver

No Data

No adequate data available. Consult a doctor before use.

Alcohol

Not Advisable

It is not advisable to consume alcohol while taking this medicine.

Driving

Not Advisable

It is not advisable to drive if you experience side effects from this medicine.

Relevant Information

Dhasedyl DM Syrup is intended for short-term symptomatic relief of dry cough. Malaysian labelling for this product indicates it may be available over-the-counter, but customers are encouraged to consult a pharmacist before use, particularly for children, pregnant or breastfeeding women, or those with existing medical conditions, to confirm the product is appropriate. Because it is a combination product, care should be taken to avoid duplicating ingredients with other cough or cold remedies used at the same time.

Frequently Asked Questions

Product Specifications

BrandActavis
ClassificationNon-prescription
Ingredients / Active IngredientsDextromethorphan
Volume100ml
Shelf LifeTypically 2-3 years from the date of manufacture when unopened; once opened, use within the timeframe stated on the label; check the expiry date before use.

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Important Medical Information

💊 Recommended Dosage:

Dosing is age-dependent and should follow the product label or a pharmacist’s/doctor’s advice; this syrup is generally not recommended for young children without medical guidance due to the sedating antihistamine component; adults should not exceed the maximum daily dose stated on the packaging.

🛑 Contraindications (Do not use if):
  • Known hypersensitivity to dextromethorphan, diphenhydramine, or other ingredients in the syrup
  • Use together with monoamine oxidase inhibitors (MAOIs) or within 14 days of stopping them
  • Severe respiratory conditions such as asthma with excessive mucus, unless directed by a doctor
  • Young children, without pharmacist or doctor guidance
  • Persons who need to remain alert (e.g. before driving or operating machinery), due to sedation risk
If you are unsure, please chat with us or consult your doctor.
⚠️ Common Side Effects:
  • Drowsiness or dizziness
  • Nausea or vomiting
  • Stomach discomfort
  • Mild confusion (especially at high doses)
  • Dry mouth
Stop taking this medication immediately and consult your doctor if you experience severe allergic reactions or side effects.
IMPORTANT: Unsure? Chat with our pharmacists (Mon - Sat, 9:00am - 6:00pm) before buying.