Written byDr. Adeline Carol PetersBachelor of Medicine and Bachelor of Surgery (MBBS) — Manipal Academy of Higher Education (MAHE)
Last updated:
Overview
Metta Sr 500mg Tablet contains Metformin Hydrochloride 500mg (sustained-release) and is presented as a tablet. It is supplied in a pack size of 30s.
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
Take Metta Sr 500mg Tablet whole with a meal, as directed by your doctor, without crushing, chewing, or splitting the tablet, since this can affect the sustained-release mechanism.
Dosage
Treatment often begins with Metta Sr 500mg Tablet once daily with the evening meal, with your doctor gradually increasing the dose over several weeks based on your blood sugar response and tolerance. Do not change your dose without medical advice.
Storage Instructions
Store Metta Sr 500mg Tablet below 30°C, away from direct sunlight and moisture, in its original packaging, and keep out of reach and sight of children.
Side Effects
Nausea or vomiting
Diarrhea
Stomach discomfort or cramps
Metallic taste in the mouth
Loss of appetite
Weight loss (in some cases)
Contraindications
Significant kidney impairment
Metabolic acidosis, including diabetic ketoacidosis
Severe liver disease
Conditions causing poor oxygen supply to tissues, such as severe heart failure or recent heart attack
Known allergy to metformin
Before procedures requiring iodinated contrast dye, as a temporary pause is usually needed
Drug / Food Interactions
Alcohol, which raises the risk of lactic acidosis
Contrast dye used for certain X-ray or CT scans
Diuretics and some blood pressure medicines affecting kidney function
Steroid medicines, which can raise blood sugar
Other glucose-lowering medicines, increasing hypoglycaemia risk when combined
Quick Tips
Take Metta Sr 500mg Tablet with your evening meal to reduce stomach upset
Do not crush or split the tablet
Let your doctor know before undergoing scans requiring contrast dye
Keep up with routine blood tests to check kidney function and vitamin B12 levels
Increase your dose only as directed by your doctor, even if your blood sugar seems well controlled
This medicine should be used cautiously during pregnancy. Monitoring may be required.
Breastfeeding
Generally Safe
This medicine is generally safe during breastfeeding with minimal risk to the infant.
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
Starting metformin at a lower strength such as Metta Sr 500mg Tablet and increasing gradually is a common approach to reduce gastrointestinal side effects while the body adjusts. Your doctor at DoctorOnCall will guide any dose increase based on your blood sugar readings and kidney function over time.
Frequently Asked Questions
No. Metta Sr 500mg Tablet is a non-prescription product and can be ordered without a prescription. It is still dispensed by a registered pharmacist on DoctorOnCall.
Metta Sr 500mg Tablet is a tablet containing Metformin Hydrochloride 500mg (sustained-release). The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.
It is supplied in a pack size of 30s. Choose the pack size you need from the options shown on this page before adding the item to your cart.
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.
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.
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.
Store Metta Sr 500mg Tablet below 30°C, away from direct sunlight and moisture, in its original packaging, and keep out of reach and sight of children. Keep it in its original pack and do not use it after the expiry date printed on the packaging.
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.
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.
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.
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.
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.
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.
Metta Sr 500mg Tablet typically remains stable for up to 36 months from manufacture when unopened and stored correctly. Always check the expiry date on the packaging before use.
What condition or symptom are you treating with this medication?
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Important Medical Information
💊 Recommended Dosage:
Treatment often begins with Metta Sr 500mg Tablet once daily with the evening meal, with your doctor gradually increasing the dose over several weeks based on your blood sugar response and tolerance. Do not change your dose without medical advice.
🛑 Contraindications (Do not use if):
Significant kidney impairment
Metabolic acidosis, including diabetic ketoacidosis
Severe liver disease
Conditions causing poor oxygen supply to tissues, such as severe heart failure or recent heart attack
Known allergy to metformin
Before procedures requiring iodinated contrast dye, as a temporary pause is usually needed
If you are unsure, please chat with us or consult your doctor.
⚠️ Common Side Effects:
Nausea or vomiting
Diarrhea
Stomach discomfort or cramps
Metallic taste in the mouth
Loss of appetite
Weight loss (in some cases)
Stop taking this medication immediately and consult your doctor if you experience severe allergic reactions or side effects.
Please tick this box to confirm you are 18+ before adding to cart.
IMPORTANT: Unsure? Chat with our pharmacists (Mon - Sat, 9:00am - 6:00pm) before buying.