Do I need a prescription to buy Bennatus Expectorant?

No. Bennatus Expectorant is a non-prescription product and can be ordered without a prescription. It is still dispensed by a registered pharmacist on DoctorOnCall.

What does Bennatus Expectorant contain?

Bennatus Expectorant is a healthcare product containing Ammonium Chloride. The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.

What pack sizes does Bennatus Expectorant come in?

It is supplied in a pack size of 90ml. 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 Bennatus Expectorant 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 Bennatus Expectorant?

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 Bennatus Expectorant 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 Bennatus Expectorant?

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 Bennatus Expectorant 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 Bennatus Expectorant 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.

Bennatus Expectorant guaifenesin mucolytic for productive cough and mucus clearance | DoctorOnCall Malaysia

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Bennatus Expectorant

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Manufacturer HOE

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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

Bennatus Expectorant is a healthcare product with Ammonium Chloride declared as its active content. It is supplied in a pack size of 90ml.

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

Bennatus Expectorant should be taken by mouth using the measuring cup or spoon provided, and the dose should not be adjusted or repeated more often than directed on the product label or by a pharmacist. It is generally taken after meals to reduce the chance of stomach upset, and plenty of fluids should be taken alongside it to help support the expectorant action. It should not be given to young children without first checking with a doctor or pharmacist.

Dosage

The typical adult dose is as stated on the product packaging or as advised by a pharmacist, usually taken several times a day and not exceeding the maximum daily dose stated on the label. Children require a lower, weight- or age-appropriate dose and a pharmacist or doctor should be consulted before giving this product to a child. Do not take more than the recommended dose in an attempt to relieve symptoms faster, as this increases the risk of side effects.

Shelf Life

Bennatus Expectorant should be used within the shelf-life period printed on the bottle or carton when unopened and stored correctly. Once opened, it is best used within the timeframe recommended by the pharmacist, and any portion of the medicine that is discoloured, has an unusual smell, or is past its expiry date should be discarded.

Storage Instructions

Store Bennatus Expectorant at room temperature below 30°C, away from direct sunlight, heat, and moisture, and keep the bottle tightly capped between uses. Keep the medicine out of reach and sight of children at all times.

Side Effects

Drowsiness or dizziness
Dry mouth or throat
Nausea or stomach upset
Headache
Blurred vision
Mild constipation

Contraindications

Known hypersensitivity to ammonium chloride, diphenhydramine, or any other ingredient in the product
Severe liver or kidney impairment
Narrow-angle glaucoma
Difficulty urinating due to prostate enlargement or bladder outlet obstruction
Not recommended for use in infants or very young children without medical advice
Should be used with caution in patients with asthma or chronic breathing conditions where secretions need to remain productive

Drug / Food Interactions

May increase drowsiness when taken with alcohol, sedatives, sleeping tablets, or other sedating antihistamines
May interact with monoamine oxidase inhibitors (MAOIs), increasing the risk of side effects
Other medicines with anticholinergic effects may add to dryness of mouth, blurred vision, or urinary retention
Should not be taken alongside other cough and cold products containing similar antihistamine ingredients, to avoid duplication
Inform the pharmacist of all prescription and over-the-counter medicines being taken before starting this product

Quick Tips

Take after meals and drink plenty of water to help loosen mucus
Avoid driving or operating machinery until you know how this medicine affects you, as it may cause drowsiness
Do not combine with alcohol or other sedating medicines
See a doctor if the cough lasts more than a week, worsens, or is accompanied by fever, chest pain, or breathing difficulty
Keep to the stated dosing schedule rather than taking extra doses for faster relief

Ingredients / Active Ingredients

Ammonium Chloride + Diphenhydramine

Ammonium Chloride
Diphenhydramine Hydrochloride

Safety Advice

Pregnancy

Use With Care

This medicine should be used cautiously during pregnancy. Monitoring may be required.

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

Not Advisable

It is not advisable to drive if you experience side effects from this medicine.

Relevant Information

Bennatus Expectorant is intended for short-term symptomatic relief of cough and should not be used continuously for more than a few days without medical review. Because Diphenhydramine can cause drowsiness, it is often more suitable for use at night, and patients should be cautious about daytime use if alertness is required, such as when driving or working with machinery.