Do I need a prescription to buy Prime Asmin Expectorant?

No. Prime Asmin 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 Prime Asmin Expectorant contain?

Prime Asmin Expectorant is a healthcare product containing Mefenamic Acid 500mg. The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.

What pack sizes does Prime Asmin 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 Prime Asmin 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 Prime Asmin Expectorant?

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 Prime Asmin 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 Prime Asmin 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 Prime Asmin 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 Prime Asmin 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.

Prime Asmin Expectorant | guaifenesin salbutamol | cough asthma expectorant syrup | DoctorOnCall Malaysia

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Prime Asmin 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

Prime Asmin Expectorant is a healthcare product with Mefenamic Acid 500mg 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

Take Ponstan 500mg Tablet exactly as prescribed by your doctor, swallowing it whole with a glass of water and preferably with or after a meal to lessen the chance of stomach upset. Do not take it together with other NSAIDs, including aspirin used for pain relief, unless your doctor has specifically advised this, and do not continue treatment beyond the period your doctor has recommended.

Dosage

Your doctor will determine the appropriate dose and duration based on the type and severity of your pain; a common regimen for adults is an initial 500mg dose followed by 250mg every six hours as needed, typically for a short course rather than ongoing use. Do not take more than the maximum daily amount your doctor specifies. If you forget a dose and it is nearly time for the next one, skip the missed dose instead of taking two doses close together.

Storage Instructions

Store below 30°C in a dry place away from direct sunlight and moisture, keeping the tablets in their original packaging and 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

Active peptic ulcer disease or a history of gastrointestinal bleeding
Severe kidney impairment
Severe liver impairment
Severe or decompensated heart failure
Known hypersensitivity to mefenamic acid, aspirin, or other NSAIDs (including NSAID-triggered asthma or urticaria)
Pregnancy, particularly in the third trimester
Active inflammatory bowel disease

Drug / Food Interactions

Anticoagulants such as warfarin, which increase bleeding risk when taken together
Other NSAIDs or aspirin, adding to gastrointestinal and kidney-related risk
ACE inhibitors, ARBs, and diuretics used together with an NSAID, which can reduce kidney function
Lithium, as mefenamic acid can raise blood lithium levels
Methotrexate, as NSAIDs can increase its toxicity
Corticosteroids, which increase the risk of stomach irritation in combination with an NSAID
Alcohol, which can worsen stomach irritation

Quick Tips

Take with food to help lower the risk of stomach irritation
Keep to the exact dose and course length your doctor prescribes
Check with your pharmacist before combining Ponstan with any other pain reliever
Seek urgent medical attention for black stools, severe abdominal pain, or vomiting blood
Drink enough fluids while taking this medicine
Let your doctor know about any history of ulcers, kidney disease, or heart conditions before starting treatment

Ingredients / Active Ingredients

Salbutamol

Mefenamic Acid 500mg
Tablet binders and disintegrants
Film coating agents

Safety Advice

Pregnancy

Safe If Prescribed

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

Breastfeeding

Generally Safe

This medicine is generally safe during breastfeeding with minimal risk to the infant.

Kidney

Generally Safe

Generally safe, but caution may be required in some patients.

Liver

Generally Safe

Generally safe, but caution may be required in some patients.

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

Ponstan 500mg Tablet and Pontalon 500mg Tablet contain the same active ingredient and strength, mefenamic acid 500mg, but are different brands; your pharmacist or doctor can advise on brand availability, and either may be dispensed depending on stock and your doctor’s prescription. As with any mefenamic acid product, this medicine is generally intended for short-term relief of acute pain rather than long-term daily use, so consult your doctor again if your pain persists or returns frequently.

Frequently Asked Questions

Product Specifications

Brand	Prime
Classification	Non-prescription
Ingredients / Active Ingredients	Salbutamol
Volume	90ml
Shelf Life	Ponstan 500mg Tablet remains stable until the expiry date printed on the packaging when stored correctly. Do not use the tablets after this date.