Do I need a prescription to buy Mavilex 20mcg Tablet?

No. Mavilex 20mcg 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 Mavilex 20mcg Tablet contain?

Mavilex 20mcg Tablet is a tablet containing Clenbuterol Hydrochloride 20mcg. The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.

What pack sizes does Mavilex 20mcg Tablet come in?

It is supplied in pack sizes of 100s and 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 Mavilex 20mcg 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 Mavilex 20mcg Tablet?

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 Mavilex 20mcg 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 Mavilex 20mcg 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 Mavilex 20mcg 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 Mavilex 20mcg 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.

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Mavilex 20mcg Tablet

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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

Mavilex 20mcg Tablet is a tablet with Clenbuterol Hydrochloride 20mcg declared as its active content. It is supplied in pack sizes of 100s and 10s.

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 Mavilex 20mcg Tablet only exactly as prescribed by your doctor, at the dose and frequency set out in your prescription. Do not increase the dose, take it more often, or use it for any purpose other than the medical indication confirmed by your doctor, as doing so significantly increases the risk of serious cardiovascular side effects.

Dosage

The dose of Mavilex 20mcg Tablet is individualised and closely monitored by the prescribing doctor, typically starting at a low dose and adjusted based on response and tolerability. Only your doctor should determine and adjust your dose; never self-adjust the dose or use additional tablets beyond what has been prescribed.

Shelf Life

Mavilex 20mcg Tablet typically has a shelf life of around 36 months from the date of manufacture when stored unopened under the recommended conditions. Always check the expiry date printed on the blister strip and outer carton before use.

Storage Instructions

Store Mavilex 20mcg Tablet below 30°C in a cool, dry place away from direct sunlight and moisture, and keep it securely out of the reach and sight of children and anyone for whom it has not been prescribed, given its recognised potential for misuse.

Side Effects

Nervousness or restlessness
Increased heart rate (tachycardia)
Muscle cramps
Headache
Nausea
Sweating
Insomnia
Tremors

Contraindications

Hypertrophic obstructive cardiomyopathy or other significant structural heart disease
Uncontrolled hypertension or cardiac arrhythmias
Hyperthyroidism
Known hypersensitivity to clenbuterol or other beta-2 agonists
Use for non-medical purposes such as bodybuilding, weight loss, or athletic performance enhancement, which is unsafe and not a recognised medical indication

Drug / Food Interactions

Other beta-agonists or bronchodilator medicines can add to clenbuterol’s cardiac stimulant effects, increasing the risk of palpitations and tachycardia
Beta-blockers can antagonise the effects of clenbuterol and should generally not be combined without specific medical guidance
Monoamine oxidase inhibitors (MAOIs) and tricyclic antidepressants may enhance clenbuterol’s cardiovascular effects
Caffeine and other stimulants can add to nervousness, tremor, and heart rate increases
Inform your doctor of all other medicines, supplements, and stimulant use before starting treatment

Quick Tips

Never exceed the dose or frequency prescribed by your doctor
Never use this medicine for bodybuilding, weight loss, or sports performance purposes — this is unsafe misuse, not a medical use, and is prohibited by anti-doping bodies
Report any palpitations, chest pain, severe tremor, or breathlessness to your doctor immediately
Attend all scheduled follow-up appointments so your doctor can monitor your heart rate and overall response
Keep this medicine securely stored and never share it with anyone else

Ingredients / Active Ingredients

Clenbuterol

Clenbuterol Hydrochloride 20mcg (active ingredient)
Lactose
Other standard tablet excipients

Safety Advice

Pregnancy

Not Advisable

Use during pregnancy is generally not recommended unless absolutely necessary.

Breastfeeding

Not Advisable

Generally not recommended while 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

Use With Care

Use caution while driving until you know how this medicine affects you.

Relevant Information

Mavilex 20mcg Tablet is prescribed and dispensed under strict medical control because of its potent cardiovascular and metabolic effects and its well-known potential for misuse outside legitimate medical care. DoctorOnCall requires a full online consultation to confirm a genuine medical indication before dispensing, and ongoing doctor follow-up is an essential part of safe treatment with this medicine.