Do I need a prescription to buy Sunward Allersin-F 4mg Tablet?

No. Sunward Allersin-F 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 Sunward Allersin-F 4mg Tablet contain?

Sunward Allersin-F 4mg Tablet is a tablet containing Chlorpheniramine Maleate 4mg per tablet. The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.

What pack sizes does Sunward Allersin-F 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 Sunward Allersin-F 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 Sunward Allersin-F 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 Sunward Allersin-F 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 Sunward Allersin-F 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 Sunward Allersin-F 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 Sunward Allersin-F 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.

Sunward Allersin-F 4mg Tablet | chlorpheniramine | allergy rhinitis antihistamine tablet | DoctorOnCall Malaysia

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Sunward Allersin-F 4mg Tablet

Brand Sunward

Manufacturer Sunward

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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 31, 2026

Overview

Sunward Allersin-F 4mg Tablet contains Chlorpheniramine Maleate 4mg per tablet 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 this tablet by mouth, generally with a glass of water, and it may be taken with or without food. Follow the dose and frequency stated on the product label or as advised by a doctor or pharmacist, and avoid driving or operating machinery until you know how this medicine affects you, since it commonly causes drowsiness.

Dosage

The usual adult dose is one 4mg tablet every 4 to 6 hours as needed for allergy symptoms, up to the maximum stated on the product label, generally not exceeding 24mg in 24 hours. Children and elderly patients may need a lower dose or closer guidance from a pharmacist or doctor, and this product is generally not recommended for very young children without medical advice.

Shelf Life

When stored correctly and unopened, this tablet typically remains stable until the expiry date printed on the blister strip and outer packaging. Always check this date before use and do not take the tablet beyond its stated expiry.

Storage Instructions

Store below 30°C in a cool, dry place away from direct sunlight and moisture, and keep the tablets in their original blister packaging until ready to use. Keep this medicine 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 other antihistamines
Narrow-angle glaucoma
Severe asthma attack or significant breathing difficulty
Urinary retention or bladder outflow obstruction, such as an enlarged prostate
Newborn or premature infants
Use together with monoamine oxidase inhibitor (MAOI) medicines

Drug / Food Interactions

Avoid alcohol, which can significantly increase drowsiness
Avoid combining with other sedating medicines such as sleeping tablets, other antihistamines, or certain pain relievers, as this increases sedation
May interact with monoamine oxidase inhibitors (MAOIs) and increase anticholinergic side effects
Inform your doctor or pharmacist of all other medicines you are taking, especially other cold and flu preparations that may already contain an antihistamine

Quick Tips

Take with a full glass of water, with or without food
Avoid driving or operating heavy machinery until you know how this medicine affects you
Avoid alcohol while taking this medicine
Do not take together with other products that already contain an antihistamine, to avoid excess dosing
Speak to a pharmacist before use if you have glaucoma, asthma, or prostate problems

Ingredients / Active Ingredients

Chlorpheniramine Maleate

Active ingredient: Chlorpheniramine Maleate 4mg per tablet
Standard pharmaceutical-grade tablet 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

Chlorpheniramine is one of the most established and widely available antihistamines and works well for short-term relief of allergic symptoms, though newer, less-sedating antihistamines may be preferred for daytime use. Pregnant or breastfeeding women, the elderly, and those with chronic conditions such as glaucoma, asthma, or prostate enlargement should consult a doctor or pharmacist before use, and anyone with allergy symptoms that persist beyond a few days, or that are severe, should seek medical advice.