Do I need a prescription to buy Pharmaniaga Diphenhydramine Expectorant?

No. Pharmaniaga Diphenhydramine 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 Pharmaniaga Diphenhydramine Expectorant contain?

Pharmaniaga Diphenhydramine Expectorant is a healthcare product containing Diphenhydramine HCl. The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.

What pack sizes does Pharmaniaga Diphenhydramine Expectorant come in?

It is supplied in pack sizes of 120ml and 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 Pharmaniaga Diphenhydramine 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 Pharmaniaga Diphenhydramine 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 Pharmaniaga Diphenhydramine 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 Pharmaniaga Diphenhydramine 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 Pharmaniaga Diphenhydramine 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 Pharmaniaga Diphenhydramine 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.

Pharmaniaga Diphenhydramine Expectorant | diphenhydramine ammonium chloride | cough expectorant syrup | DoctorOnCall Malaysia

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Pharmaniaga Diphenhydramine Expectorant

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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 18, 2026

Overview

Pharmaniaga Diphenhydramine Expectorant is a healthcare product with Diphenhydramine HCl declared as its active content. It is supplied in pack sizes of 120ml and 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

Shake the bottle well before use. Measure the dose accurately using the measuring cup or spoon provided, and take by mouth as directed on the label or by a pharmacist. Do not exceed the recommended dose or frequency. This product may cause drowsiness — avoid driving or operating machinery after taking it, and avoid alcohol.

Dosage

Dosage depends on age and is indicated on the product label; adults and children should be dosed according to the manufacturer’s instructions or a pharmacist’s advice, with lower doses generally used for children. Do not use for more than a few days without consulting a doctor if cough symptoms persist or worsen. Do not give to infants or very young children without medical advice.

Shelf Life

Pharmaniaga Diphenhydramine Expectorant is generally stable for the shelf life stated on the packaging when stored correctly and unopened. Always check the expiry date printed on the bottle or carton before use, and do not use the product after this date. Once opened, use within the period stated on the label.

Storage Instructions

Store Pharmaniaga Diphenhydramine Expectorant below 30°C in a cool, dry place away from direct sunlight and moisture. Keep the bottle tightly closed after use. Keep out of reach and sight of children. Do not freeze.

Side Effects

Drowsiness or dizziness
Dry mouth, nose, or throat
Blurred vision
Constipation
Difficulty urinating
Nervousness (especially in children)

Contraindications

Known hypersensitivity to diphenhydramine or any ingredient in the syrup
Severe asthma or breathing difficulties without medical supervision
Use in newborns or premature infants
Narrow-angle glaucoma
Difficulty urinating due to prostate enlargement, unless advised by a doctor

Drug / Food Interactions

Alcohol and other sedating medicines (such as sleeping tablets or certain antidepressants) can increase drowsiness when combined with diphenhydramine
Other cold and flu products containing antihistamines should be avoided to prevent excessive sedation or overdose
MAOI antidepressants may interact with antihistamines — inform your doctor if you are taking these
Inform your pharmacist of all other medicines you are taking before use

Quick Tips

Shake well before each use and measure the dose accurately
Avoid driving or operating machinery after taking this medicine, as it may cause drowsiness
Avoid alcohol while taking this product
Do not combine with other cough, cold, or allergy medicines containing antihistamines
See a doctor if cough persists beyond a week, worsens, or is accompanied by fever or breathing difficulty
Keep out of reach of children

Ingredients / Active Ingredients

Diphenhydramine

Diphenhydramine HCl (active ingredient, expectorant combination)

Safety Advice

Pregnancy

Safe If Prescribed

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

Breastfeeding

No Data

No data available regarding safety during breastfeeding.

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

Pharmaniaga Diphenhydramine Expectorant is intended for short-term symptomatic relief of cough associated with colds and mild respiratory infections. It is a sedating antihistamine-based product, so caution is needed with activities requiring alertness. If cough symptoms are severe, persistent, or associated with other concerning symptoms, customers should consult a doctor or a DoctorOnCall pharmacist rather than relying on self-treatment alone.