Do I need a prescription to buy Glucobay 100mg Tablet?

No. Glucobay 100mg 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 Glucobay 100mg Tablet contain?

Glucobay 100mg Tablet is a tablet containing Acarbose 100mg. The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.

What pack sizes does Glucobay 100mg Tablet come in?

It is supplied in pack sizes of 10s and 100s. 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 Glucobay 100mg 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 Glucobay 100mg 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 Glucobay 100mg 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 Glucobay 100mg 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 Glucobay 100mg 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 Glucobay 100mg 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.

Glucobay 100mg Tablet acarbose type 2 diabetes postprandial | DoctorOnCall Malaysia

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Glucobay 100mg Tablet

Brand Bayer

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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

Glucobay 100mg Tablet contains Acarbose 100mg and is presented as a tablet. It is supplied in pack sizes of 10s and 100s.

It is classified as a non-prescription medicine, so no prescription is needed to order it. Under Malaysian rules for medicine information, this page carries product, safety and handling information only.

You can consult a doctor or pharmacist online on DoctorOnCall about this product before or after you order. Every order is checked by a registered pharmacist before it is delivered. Always read the label and the leaflet supplied with the pack.

Directions for Use

Glucobay 100mg Tablet should be taken exactly as prescribed by your doctor, usually with the first bite of each main meal, either swallowed whole with a little liquid or chewed together with the first mouthful of food. Taking it any later than the start of a meal significantly reduces its effectiveness. Your doctor may start you on a lower dose and gradually increase it based on your response and tolerability, so do not change your dose without medical advice.

Dosage

The dosage of Glucobay 100mg Tablet is individualised by your doctor based on your blood glucose levels, treatment response, and tolerability, and treatment is often started at a lower strength before increasing to 100mg taken up to three times daily with main meals. Do not increase, decrease, or stop your dose on your own, and always follow the specific dosing schedule given by your prescribing doctor.

Shelf Life

Glucobay 100mg Tablet has a shelf life of approximately 36 months from the date of manufacture when stored correctly and unopened. Always check the expiry date printed on the blister strip and outer packaging before use, and do not use the product beyond its expiry date.

Storage Instructions

Store Glucobay 100mg Tablet below 30°C in a cool, dry place away from direct sunlight and moisture, in its original blister packaging until ready for use. Keep out of the reach and sight of children, and do not store in the bathroom or other humid areas.

Side Effects

Bloating or gas
Stomach pain
Diarrhea
Mild skin rash
Temporary elevation in liver enzymes (requires monitoring)

Contraindications

Known hypersensitivity to acarbose or any ingredient in the tablet
Inflammatory bowel disease
Intestinal obstruction or predisposition to intestinal obstruction
Chronic intestinal disorders associated with marked digestion or absorption problems
Conditions that may worsen with increased intestinal gas formation, such as large hernias
Severe kidney impairment
Liver cirrhosis

Drug / Food Interactions

May increase the risk of hypoglycaemia (low blood sugar) when combined with insulin or sulfonylurea-type antidiabetic medicines
If hypoglycaemia occurs while taking acarbose with another antidiabetic medicine, it must be corrected with glucose (dextrose), not ordinary table sugar, as acarbose blocks the breakdown of sucrose
Digestive enzyme preparations (such as those containing amylase) and intestinal adsorbents like activated charcoal may reduce the effectiveness of acarbose
Cholestyramine and neomycin may enhance the blood-glucose-lowering effect of acarbose and increase gastrointestinal side effects

Quick Tips

Always take Glucobay with the first bite of your main meal, never on an empty stomach between meals
Do not skip meals on days you take this medicine
If you also take insulin or a sulfonylurea, carry glucose tablets or dextrose in case of low blood sugar
Monitor your blood glucose regularly as advised by your doctor
Report persistent or severe stomach upset to your doctor
Continue following a controlled-carbohydrate diet and regular exercise alongside treatment

Ingredients / Active Ingredients

Acarbose

Acarbose 100mg (active ingredient)
Microcrystalline cellulose
Maize starch
Magnesium stearate
Colloidal anhydrous silica

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

Use With Care

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

Relevant Information

Glucobay 100mg Tablet works best as part of an overall type 2 diabetes management plan that includes a controlled-carbohydrate diet, regular physical activity, and routine monitoring of blood glucose and HbA1c. Regular follow-up with your doctor is important so that your dose can be adjusted appropriately and your overall diabetes control reviewed over time.