Do I need a prescription to buy Duopharma Chloramine 4mg Tablet?

No. Duopharma Chloramine 4mg Tablet is a non-prescription product and can be ordered without a prescription. It is still dispensed by a registered pharmacist on DoctorOnCall.

What does Duopharma Chloramine 4mg Tablet contain?

Duopharma Chloramine 4mg Tablet is a tablet containing Chlorpheniramine Maleate 4mg. The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.

What pack sizes does Duopharma Chloramine 4mg Tablet come in?

It is supplied in a pack size of 10s. 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 Duopharma Chloramine 4mg Tablet 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 Duopharma Chloramine 4mg Tablet?

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.

Can I speak to a doctor or pharmacist about Duopharma Chloramine 4mg Tablet 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.

What should I do if I notice side effects after using Duopharma Chloramine 4mg Tablet?

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 Duopharma Chloramine 4mg Tablet 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 Duopharma Chloramine 4mg Tablet 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.

Duopharma Chloramine 4mg Tablet chlorphenamine antihistamine allergy | DoctorOnCall Malaysia

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Duopharma Chloramine 4mg Tablet

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Reviewed byDr. Mohd Izzat Amir Bin AwangDoctor of Medicine (MD), University of Mansoura - Manchester

Written byDr. Adeline Carol PetersBachelor of Medicine and Bachelor of Surgery (MBBS) — Manipal Academy of Higher Education (MAHE)

Last updated: October 22, 2026

Overview

Duopharma Chloramine 4mg Tablet contains Chlorpheniramine Maleate 4mg and is presented as a tablet. It is supplied in a pack size of 10s.

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

Take Duopharma Chloramine 4mg Tablet orally with a glass of water, with or without food, as directed on the product label or by a doctor or pharmacist. Swallow the tablet whole; do not crush or chew unless advised otherwise. Follow the recommended dosing schedule and do not exceed the maximum daily dose stated on the packaging.

Dosage

The usual adult dose of Duopharma Chloramine 4mg Tablet is one tablet (4mg) every 4 to 6 hours as needed for allergy symptoms, not exceeding the maximum daily dose stated on the product packaging. Dosing in children and the elderly may differ and should follow the specific guidance on the label or advice from a healthcare professional. Always check the packaging for age-specific instructions before giving this tablet to a child.

Shelf Life

Duopharma Chloramine 4mg Tablet should be used within the shelf-life period printed on the blister strip or carton, and discarded after the stated expiry date. Do not use tablets that appear discoloured, crumbling, or otherwise different from their usual appearance.

Storage Instructions

Store Duopharma Chloramine 4mg Tablet at room temperature, away from direct sunlight, heat, and moisture. Keep the tablets in their original blister packaging until ready to use, and store out of the reach and sight of children.

Side Effects

Drowsiness or fatigue
Dry mouth, nose, or throat
Dizziness
Nausea or upset stomach
Headache
Restlessness (especially in children)
Blurred vision

Contraindications

Known hypersensitivity to chlorpheniramine or any other ingredient in this tablet
Children below the age recommended on the product packaging
Severe liver disease
Narrow-angle glaucoma
Severe urinary retention or bladder outlet obstruction
During an acute asthma attack
Use with caution in the elderly due to increased sensitivity to sedating and anticholinergic effects

Drug / Food Interactions

Increased drowsiness when taken with alcohol or other sedating medicines such as sleeping pills or tranquilisers
May increase sedative effects when combined with other antihistamines, opioid painkillers, or muscle relaxants
Should not be combined with monoamine oxidase inhibitor (MAOI) antidepressants
May enhance the anticholinergic effects of other medicines, such as certain antidepressants or medicines for overactive bladder
Caution when combined with other drowsiness-causing medicines, including some cough and cold preparations

Quick Tips

Avoid driving or operating heavy machinery until you know how this tablet affects you, as it commonly causes drowsiness
Take at the same times each day to maintain steady symptom control
Avoid alcohol while taking this medicine to reduce excessive sedation
Take with food if stomach upset occurs
Do not give to young children without checking the age recommendation on the packaging

Ingredients / Active Ingredients

Chlorpheniramine Maleate

Chlorpheniramine Maleate 4mg
Other non-active excipients as listed on the product packaging

Safety Advice

Pregnancy

Safe If Prescribed

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

Breastfeeding

Use With Care

Use with caution. Monitor infant for potential adverse reactions.

Kidney

Use With Care

Use cautiously. Dose adjustment or monitoring may be required.

Liver

Use With Care

Use cautiously. Liver function monitoring may be required.

Alcohol

Use With Care

Caution is advised when consuming alcohol with this medicine.

Driving

Use With Care

Use caution while driving until you know how this medicine affects you.

Relevant Information

Duopharma Chloramine 4mg Tablet is commonly used as a short-term, symptomatic treatment for allergy symptoms and is not intended to treat the underlying cause of an allergy. If allergy symptoms persist for more than a few days, are severe, or are accompanied by breathing difficulty, swelling of the face or throat, or signs of a severe allergic reaction, medical attention should be sought promptly rather than continuing self-treatment with this tablet.