Written byDr. Adeline Carol PetersBachelor of Medicine and Bachelor of Surgery (MBBS) — Manipal Academy of Higher Education (MAHE)
Last updated:
Overview
Dexfen Syrup contains Dextromethorphan and is presented as a syrup. It is supplied in pack sizes of 120ml and 60ml.
It is classified as a non-prescription medicine, so no prescription is needed to order it. Under Malaysian rules for medicine information, this page carries product, safety and handling information only.
You can consult a doctor or pharmacist online on DoctorOnCall about this product before or after you order. Every order is checked by a registered pharmacist before it is delivered. Always read the label and the leaflet supplied with the pack.
Directions for Use
Dexfen Syrup should be taken by mouth using the measuring cup or spoon provided, at the dose and frequency stated on the label or as advised by a pharmacist or doctor, and should not be combined with other cough, cold, or antihistamine products without checking first to avoid duplicating ingredients.
Dosage
Dosage depends on the age of the person being treated and should follow the product label or a pharmacist’s or doctor’s advice; it should not be given to very young children without specific medical guidance, and the maximum daily dose stated on the packaging should not be exceeded.
Storage Instructions
Store below 30 degrees Celsius in a cool, dry place away from direct sunlight, keep the bottle tightly closed, and keep out of reach of children.
Side Effects
Drowsiness or sedation
Dizziness
Dry mouth, nose, or throat
Nausea or stomach upset
Blurred vision
Difficulty urinating in some individuals
Rarely, allergic skin reactions such as rash
Contraindications
Known hypersensitivity to dextromethorphan, dexchlorpheniramine, or any other ingredient in the syrup
Current use of, or recent use within two weeks of, monoamine oxidase inhibitor (MAOI) medicines
Severe liver impairment
Narrow-angle glaucoma or severe difficulty passing urine, due to the antihistamine component
Not recommended for young children without medical advice
Drug / Food Interactions
Monoamine oxidase inhibitors (MAOIs), which can cause a dangerous interaction with dextromethorphan
Other sedating antihistamines, sleep aids, or sedatives, which can add to drowsiness
Alcohol, which increases sedation and dizziness
Other cough, cold, or allergy products containing similar ingredients, which can lead to accidental overdose if combined
Quick Tips
Avoid driving or operating machinery until you know how this syrup affects you, as it may cause drowsiness
Do not combine with alcohol or other sedating medicines
Check other cough and cold products you are taking to avoid duplicating dextromethorphan or antihistamine ingredients
See a doctor if the cough persists beyond seven days, is accompanied by fever, or brings up thick or discoloured mucus
Use the measuring device provided rather than a household spoon for accurate dosing
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
Dexfen Syrup combines dextromethorphan and dexchlorpheniramine maleate for symptomatic relief of dry cough with accompanying cold or allergy symptoms, and is best used for short courses; a cough that lasts longer than a week, worsens, or is accompanied by breathing difficulty, high fever, or chest pain should be assessed by a doctor rather than continuing self-treatment.
Frequently Asked Questions
No. Dexfen Syrup is a non-prescription product and can be ordered without a prescription. It is still dispensed by a registered pharmacist on DoctorOnCall.
Dexfen Syrup is a syrup containing Dextromethorphan. The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.
It is supplied in pack sizes of 120ml and 60ml. Choose the pack size you need from the options shown on this page before adding the item to your cart.
This page is limited to product, safety and handling information in line with Malaysian rules on medicine information. If you want advice on whether this product suits you, book an online consultation with a doctor or pharmacist on DoctorOnCall.
Follow the instructions printed on the label and in the leaflet supplied with the pack, and do not exceed the stated amount or duration. Handling steps are set out in the Directions for Use section on this page.
Yes. DoctorOnCall offers online consultations with licensed doctors and registered pharmacists, so you can ask about this product, your existing medicines, or anything on the label before you place an order.
Store below 30 degrees Celsius in a cool, dry place away from direct sunlight, keep the bottle tightly closed, and keep out of reach of children. Keep it in its original pack and do not use it after the expiry date printed on the packaging.
Stop using the product and speak to a doctor or pharmacist about any reaction that concerns you. Seek medical care immediately for signs of a severe reaction such as difficulty breathing, swelling of the face, lips or throat, or a widespread rash. Reported reactions are listed in the Side Effects section on this page.
Within Malaysia, standard delivery takes 3 to 5 working days. Same-day delivery is available in the Klang Valley for orders placed before 12pm; orders placed after 12pm arrive by the end of the next day.
Orders to Singapore are sent as international deliveries and take 5 to 9 working days. A lump-sum shipping and handling fee applies to every overseas delivery and is shown at checkout.
Customers in Malaysia can pay by FPX online banking, credit or debit card (Visa and Mastercard), and supported e-wallets including Touch ‘n Go eWallet, GrabPay and ShopeePay.
FPX and local e-wallets are tied to Malaysian bank and wallet accounts, so if your delivery address is in Singapore, use the payment options displayed at checkout for that address rather than assuming the same list applies.
Yes. DoctorOnCall ships to Singapore as an international order dispatched from Malaysia, arriving in 5 to 9 working days with a lump-sum shipping and handling fee.
Singapore’s Health Sciences Authority (HSA) allows personal imports of up to three months’ supply of a medicine for your own use or an immediate family member’s, as long as it contains no controlled drugs, psychotropic substances or prohibited items. Keep the product in its original labelled packaging and keep a copy of your prescription or doctor’s letter with it. Quantities above three months’ supply, and medicines containing controlled substances, require prior HSA approval.
Products listed on DoctorOnCall are registered with Malaysia’s Ministry of Health for supply in Malaysia, and each pack carries its MAL registration number.
An order delivered to Singapore arrives as a personal import of a Malaysia-registered product; HSA product registration is not required for personal-use quantities, but it is also not the same as a product registered for sale in Singapore. If you need a locally registered Singapore product, buy it from a pharmacy in Singapore.
DoctorOnCall’s customer care team handles order, delivery and product queries through the contact channels on the site, including WhatsApp and the online help centre.
For deliveries to Singapore, allow more time before chasing an order than you would for a local Malaysian delivery, as the parcel passes through customs clearance and tracking updates can appear later in the journey.
What condition or symptom are you treating with this medication?
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Important Medical Information
💊 Recommended Dosage:
Dosage depends on the age of the person being treated and should follow the product label or a pharmacist’s or doctor’s advice; it should not be given to very young children without specific medical guidance, and the maximum daily dose stated on the packaging should not be exceeded.
🛑 Contraindications (Do not use if):
Known hypersensitivity to dextromethorphan, dexchlorpheniramine, or any other ingredient in the syrup
Current use of, or recent use within two weeks of, monoamine oxidase inhibitor (MAOI) medicines
Severe liver impairment
Narrow-angle glaucoma or severe difficulty passing urine, due to the antihistamine component
Not recommended for young children without medical advice
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.
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IMPORTANT: Unsure? Chat with our pharmacists (Mon - Sat, 9:00am - 6:00pm) before buying.