- Fast Delivery
- Muslim-Friendly
- FDA Approved
- Secure Payment
Overview
Duolin Respules is a healthcare product with Ipratropium Bromide declared as its active content. It is supplied in a pack size of 2.5ml x5.
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
Duolin Respules must only be used exactly as prescribed by a doctor following an online consultation through DoctorOnCall or an in-person assessment, and must be administered using a properly functioning nebulizer device — it is not to be swallowed or injected. Open one respule as directed, empty its full contents into the nebulizer chamber (diluting with saline if instructed by the doctor), and inhale the resulting mist through the mouthpiece or mask over the prescribed period. Do not reuse a partially used respule, and follow the doctor’s instructions on frequency and technique carefully.
Dosage
The dose and frequency of Duolin Respules must be determined by a doctor based on the severity of the respiratory condition, following a prescription issued after an online consultation via DoctorOnCall or an in-person medical assessment. Patients should not increase the frequency of nebulization beyond what is prescribed, even if symptoms feel severe, and should seek urgent medical attention if breathing difficulty is not relieved or worsens despite treatment.
Shelf Life
Duolin Respules should be used within the shelf-life period printed on the foil strip or carton, and discarded after the stated expiry date. Each respule is intended for single use only; any unused solution remaining in an opened respule should be discarded and not stored for later use.
Storage Instructions
Store Duolin Respules as directed on the packaging, typically at room temperature and protected from light, unless the label specifically instructs refrigeration. Keep respules in their original foil strip until ready for use to protect them from light and moisture, and keep out of the reach and sight of children.
Side Effects
- Shakiness or tremors
- Headache
- Increased heart rate
- Nervousness or restlessness
- Muscle cramps
- Dry mouth or throat irritation
Contraindications
- Known hypersensitivity to ipratropium bromide, levosalbutamol (or salbutamol/atropine-related compounds), or any other ingredient in this product
- Hypertrophic obstructive cardiomyopathy
- Tachyarrhythmia (abnormally fast, irregular heart rhythm)
- Not to be used without a doctor’s prescription and ongoing medical supervision
- Use with caution in patients with known cardiovascular disease, uncontrolled hyperthyroidism, or diabetes
Drug / Food Interactions
- Should not generally be combined with other beta-blocker medicines, as they may reduce the bronchodilator effect of Levosalbutamol
- Concurrent use with other sympathomimetic bronchodilators may increase the risk of cardiovascular side effects
- Caution with monoamine oxidase inhibitors (MAOIs) or tricyclic antidepressants, which may increase cardiovascular effects
- Diuretics used together with this medicine may increase the risk of low blood potassium (hypokalaemia)
- Inform the prescribing doctor of all other respiratory or heart medicines being used before starting treatment
Quick Tips
- Always obtain and use this medicine strictly under a doctor’s prescription and guidance via DoctorOnCall — never adjust the dose or frequency on your own
- Use only with a properly functioning nebulizer device as instructed by your doctor or pharmacist
- Seek urgent medical attention if breathing difficulty worsens or is not relieved after nebulization
- Report tremor, palpitations, or chest discomfort to the prescribing doctor promptly
- Attend scheduled doctor follow-up visits to monitor asthma/COPD control and adjust treatment as needed
Frequently Asked Questions
Do I need a prescription to buy Duolin Respules?
No. Duolin Respules is a non-prescription product and can be ordered without a prescription. It is still dispensed by a registered pharmacist on DoctorOnCall.
What does Duolin Respules contain?
Duolin Respules is a healthcare product containing Ipratropium Bromide. The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.
What pack sizes does Duolin Respules come in?
It is supplied in a pack size of 2.5ml x5. Choose the pack size you need from the options shown on this page before adding the item to your cart.
Why is there no information here about what Duolin Respules is for?
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.
How should I use Duolin Respules?
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.
Can I speak to a doctor or pharmacist about Duolin Respules before I buy it?
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.
How should I store Duolin Respules?
Store Duolin Respules as directed on the packaging, typically at room temperature and protected from light, unless the label specifically instructs refrigeration. Keep respules in their original foil strip until ready for use to protect them from light and moisture, and keep out of the reach and sight of children. Keep it in its original pack and do not use it after the expiry date printed on the packaging.
What should I do if I notice side effects after using Duolin Respules?
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.
How long will delivery take?
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.
What payment methods can I use?
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.
Can Duolin Respules be delivered to Singapore?
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.
Is Duolin Respules registered with the authorities?
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.
Who do I contact if there is a problem with my order?
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.
Ingredients / Active Ingredients
- Ipratropium Bromide
- Levosalbutamol
- Other non-active excipients as listed on the product packaging
Related Health Conditions
Safety Advice
Pregnancy
This medicine should only be used during pregnancy if prescribed by a doctor after careful evaluation.
Breastfeeding
This medicine is generally safe during breastfeeding with minimal risk to the infant.
Kidney
Generally safe, but caution may be required in some patients.
Liver
Generally safe, but caution may be required in some patients.
Alcohol
Caution is advised when consuming alcohol with this medicine.
Driving
Use caution while driving until you know how this medicine affects you.
Relevant Information
Duolin Respules is intended for use with a nebulizer machine only and is typically prescribed for patients experiencing moderate to severe bronchospasm associated with asthma or COPD exacerbations. Ongoing doctor follow-up and monitoring are important parts of treatment with this medicine, as the underlying respiratory condition often requires a broader treatment plan beyond nebulized bronchodilators alone, including long-term controller medicines where appropriate.
Medical Review
Reviewed by:
Doctor of Medicine (MD), University of Mansoura - Manchester



