Asthator 4mg Tablet

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Overview

Asthator 4mg Tablet contains Montelukast 4mg, a leukotriene receptor antagonist formulated at a lower paediatric strength for use in young children who have been diagnosed with asthma or, in some cases, allergic rhinitis. Montelukast works by blocking leukotrienes, natural chemicals in the body that contribute to airway inflammation, tightening, and mucus production, helping to reduce the frequency and severity of asthma symptoms and allergy-related breathing difficulty.

Asthator 4mg Tablet is a prescription-only medicine in Malaysia. DoctorOnCall requires an online medical consultation so a doctor can assess the child’s diagnosis, weight, and suitability before a prescription is issued and the medicine is dispensed by a registered pharmacist.

How it Works

Montelukast selectively blocks the cysteinyl leukotriene receptor (CysLT1), preventing leukotrienes from triggering inflammation, swelling, and constriction of the airway muscles. By interrupting this pathway, it helps keep the airways more open and less reactive over time, making it useful as a preventive, maintenance-type treatment rather than a rescue medicine for sudden asthma attacks.

Directions for Use

Asthator 4mg Tablet is usually given once daily in the evening, as prescribed by the child’s doctor, and can be taken with or without food. If the tablet is chewable or dispersible, follow the specific instructions given by the pharmacist on how to administer it to a young child; this medicine should be given consistently every day, even when the child feels well, unless the doctor advises otherwise.

Dosage

The 4mg strength is intended for young children within the age range specified by the prescribing doctor, and the exact dose and duration should follow the doctor’s instructions precisely. It is not a fast-acting rescue treatment, so it will not relieve a sudden asthma attack, and a reliever inhaler should still be available as directed by the child’s doctor.

Shelf Life

Asthator 4mg Tablet should be used within the shelf life printed on the packaging when stored correctly. Do not use the tablets after the expiry date, and any unused or expired medicine should be disposed of safely rather than kept for later use.

Storage Instructions

Store Asthator 4mg Tablet at room temperature, away from direct light, heat, and moisture, in its original packaging until it is time for the next dose. Keep the medicine well out of the reach of children, as this and similar chewable formulations can be mistaken for sweets.

Side Effects

  • Headache
  • Stomach discomfort or pain
  • Cough
  • Dizziness
  • Fatigue
  • Sore throat
  • Diarrhoea

Contraindications

  • Known hypersensitivity to montelukast or any ingredient in the tablet
  • Not intended for relief of acute asthma attacks or status asthmaticus
  • Use with caution in children with a history of mental health or behavioural changes, and report any new mood or behaviour symptoms to the doctor
  • Should not replace other prescribed asthma medicines without the doctor’s specific instruction
  • Use only under medical guidance if the child has liver impairment

Drug / Food Interactions

  • May interact with certain enzyme-inducing medicines such as phenobarbital or rifampicin, which can reduce montelukast’s effect
  • Inform the doctor of all other medicines, including other asthma or allergy treatments, the child is taking
  • No significant food restrictions are required, and it can be taken with or without meals
  • Do not combine with other leukotriene modifiers unless specifically directed by the doctor

Quick Tips

  • Give the dose at the same time each evening to build a consistent routine
  • Continue giving this medicine daily even when the child has no symptoms, unless the doctor says to stop
  • Always keep a reliever inhaler available as prescribed, since this medicine does not treat sudden attacks
  • Watch for and report any unusual mood, behaviour, or sleep changes to the doctor
  • Keep all scheduled follow-up appointments to monitor the child’s asthma control
  • Store safely away from young children to avoid accidental ingestion

Frequently Asked Questions

What is Asthator 4mg Tablet used for?

It is a prescription leukotriene receptor antagonist used at a lower paediatric strength to help prevent and manage asthma symptoms, and sometimes allergic rhinitis, in young children.

How should Asthator 4mg Tablet be given to a child?

It is usually given once daily in the evening, with or without food, exactly as prescribed by the child’s doctor, and should be continued regularly even when symptoms are absent.

What are the common side effects of Asthator 4mg Tablet?

Common effects include headache, stomach upset, fever, and occasional mood or sleep changes; any unusual behaviour changes should be reported to the doctor.

Who should not take Asthator 4mg Tablet?

Children with a known allergy to montelukast should not take it, and it is not suitable as a rescue treatment for a sudden asthma attack.

Is Asthator 4mg Tablet a rescue inhaler replacement?

No, it is a preventive maintenance medicine and does not relieve sudden asthma attacks; a reliever inhaler should still be kept available as directed by the doctor.

Can I purchase Asthator 4mg Tablet through DoctorOnCall in Malaysia or Singapore?

Yes, Asthator 4mg Tablet is available through DoctorOnCall, a licensed online pharmacy serving Malaysia and Singapore. As this is a prescription medicine, an online consultation is required so a doctor can assess suitability and issue a prescription before the order is processed.

Is Asthator 4mg Tablet supplied by DoctorOnCall genuine and safe to use for customers in Malaysia and Singapore?

Yes, all stock is sourced through licensed pharmacy supply channels and every order is dispensed and checked by a registered pharmacist before it is sent to customers in Malaysia and Singapore.

What payment methods can I use to pay for Asthator 4mg Tablet in Malaysia and Singapore?

You can pay using Online Banking, Credit Card, and e-Wallets (Boost, GrabPay), among other available options at checkout.

Does DoctorOnCall offer an installment payment plan for Asthator 4mg Tablet in Malaysia?

Instalment payment plans may be available for eligible purchases where applicable; please contact Customer Service for the latest information.

Is delivery free, and how much does it cost for Asthator 4mg Tablet orders to Malaysia and Singapore?

Delivery fees depend on your delivery location and order terms; please contact Customer Service for the latest shipping fee information.

How long will it take for my Asthator 4mg Tablet order to arrive in Malaysia or Singapore?

Orders typically take 3-5 working days to arrive within Malaysia, and 5-9 working days for delivery to Singapore.

What is DoctorOnCall’s shipping, return, or cancellation policy for Asthator 4mg Tablet in Malaysia and Singapore?

Please refer to DoctorOnCall’s Shipping & Delivery Policy and Return, Refund & Exchange Policy, or contact Customer Service for guidance specific to your order.

Ingredients / Active Ingredients

  • Montelukast Sodium equivalent to Montelukast 4mg
  • Mannitol
  • Microcrystalline Cellulose
  • Magnesium Stearate

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

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

Generally Safe

This medicine is generally safe and should not impair your driving ability.

Relevant Information

Asthator 4mg Tablet is generally used as a long-term preventive treatment and works best when given regularly as part of an overall asthma management plan agreed with the child’s doctor. Parents and caregivers should keep track of symptom frequency and any side effects, particularly changes in mood or behaviour, and discuss these at follow-up visits so that treatment can be adjusted if needed.

Medical Review

Written by:

Dr. Chong Zhan Pong

Doctor of Medicine (MD), International Medical University (IMU)

Reviewed by:

Dr. Mohd Izzat Amir Bin Awang

Doctor of Medicine (MD), University of Mansoura - Manchester

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Important Medical Information

💊 Recommended Dosage:

The 4mg strength is intended for young children within the age range specified by the prescribing doctor, and the exact dose and duration should follow the doctor’s instructions precisely. It is not a fast-acting rescue treatment, so it will not relieve a sudden asthma attack, and a reliever inhaler should still be available as directed by the child’s doctor.

🛑 Contraindications (Do not use if):
  • Known hypersensitivity to montelukast or any ingredient in the tablet
  • Not intended for relief of acute asthma attacks or status asthmaticus
  • Use with caution in children with a history of mental health or behavioural changes, and report any new mood or behaviour symptoms to the doctor
  • Should not replace other prescribed asthma medicines without the doctor’s specific instruction
  • Use only under medical guidance if the child has liver impairment
If you are unsure, please chat with us or consult your doctor.
⚠️ Common Side Effects:
  • Headache
  • Stomach discomfort or pain
  • Cough
  • Dizziness
  • Fatigue
  • Sore throat
  • Diarrhoea
Stop taking this medication immediately and consult your doctor if you experience severe allergic reactions or side effects.
IMPORTANT: Unsure? Chat with our pharmacists (Mon - Sat, 9:00am - 6:00pm) before buying.