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Expected arrival dates based on your shipping choice:
- Standard Delivery: Arrives approx. 30 Oct 2026
Currently Out of Stock No Longer Available


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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
Related Health Conditions
Safety Advice
Pregnancy
This medicine should only be used during pregnancy if prescribed by a doctor after careful evaluation.
Breastfeeding
Limited data on excretion in breast milk. Consult a doctor before use.
Kidney
Generally safe, but caution may be required in some patients.
Liver
No adequate data available. Consult a doctor before use.
Alcohol
It is not advisable to consume alcohol while taking this medicine.
Driving
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
No. Dhasedyl DM Syrup is a non-prescription product and can be ordered without a prescription. It is still dispensed by a registered pharmacist on DoctorOnCall.
Dhasedyl DM Syrup is a syrup containing Dextromethorphan Hydrobromide. The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.
It is supplied in a pack size of 100ml. 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.
Use it exactly as stated on the pack label, without changing the amount or how often you use it. If anything on the label is unclear, check with a pharmacist before the first use, and read 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°C in a cool, dry place away from direct sunlight; keep the bottle tightly closed; 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.
Product Specifications
| Brand | Actavis |
|---|---|
| Classification | Non-prescription |
| Ingredients / Active Ingredients | Dextromethorphan |
| Volume | 100ml |
| Shelf Life | Typically 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. |
Have questions before you buy?
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