Carbophage G1 Forte
Merck Ltd - 10 S
Prescription required
Metformin hydrochloride prolonged-release 500 mg
Carbophage XR 500 is used for type 2 diabetes mellitus (to control blood sugar), insulin resistance/prediabetes as advised by doctor; may be used alone or with other antidiabetic medicines.
Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated August 2026
Carbophage XR 500 contains Metformin hydrochloride prolonged-release 500 mg. It belongs to the Biguanide (antihyperglycemic), extended-release formulation class of medicines.
Metformin reduces glucose production by the liver and decreases intestinal absorption of glucose. It also improves the body’s sensitivity to insulin, helping cells use glucose better and lowering blood sugar levels.
Take orally as advised by your doctor, usually once daily with the evening meal or with food. Swallow the XR tablet whole; do not crush, break, or chew. Dose is adjusted based on blood sugar and tolerance; continue diet and exercise recommendations.
Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.
Take the missed dose of Carbophage XR as soon as you remember. If it is almost time for the next dose, skip the missed one and carry on with the usual schedule. Do not take two doses together to make up for a missed dose.
Taking more Carbophage XR than prescribed can be harmful. If you suspect an overdose, contact a doctor or go to the nearest emergency department at once, and carry the pack or strip with you. In India the emergency number is 112.
Most side effects of Carbophage XR are mild and settle as the body adjusts. Reported side effects include:
Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.
| Pregnancy | Consult doctor (use only if clearly needed; insulin is often preferred in pregnancy) |
|---|---|
| Alcohol | Avoid (increases risk of lactic acidosis and may affect blood sugar) |
| Habit forming | No |
Not for type 1 diabetes or diabetic ketoacidosis. Risk of lactic acidosis (rare but serious), higher in kidney impairment, severe dehydration, severe infection, heavy alcohol use, liver disease, or heart/respiratory failure—seek urgent care for weakness, muscle pain, breathing difficulty, unusual sleepiness, stomach discomfort. Use with caution/avoid in significant renal impairment; kidney function should be checked before and during treatment. Temporarily stop before/after iodinated contrast imaging and major surgery as advised. Long-term use may reduce vitamin B12 levels; monitor if anaemia/neuropathy symptoms. Hypoglycaemia is uncommon with metformin alone but can occur when combined with insulin/sulfonylureas.
iodinated contrast media, alcohol, insulin and sulfonylureas (increased hypoglycaemia risk), cimetidine, carbonic anhydrase inhibitors (e.g., topiramate/acetazolamide) (increased acidosis risk), diuretics and ACE inhibitors/ARBs (may affect kidney function), corticosteroids and sympathomimetics (may raise blood sugar)
Store below 25°C in a dry place, protected from moisture and light. Keep in original blister pack and out of reach of children.
Merck Ltd - 10 S
Prescription required
Merck Ltd - Tablet - 10 S
Prescription required
Merck Ltd - Tablet - 10 S
Prescription required

Merck Ltd - 10 S
Prescription required

Merck Ltd - Tablet - 10 Tablet
Prescription required
Merck Ltd - Tablet - 10 Tablet
Prescription required
Merck Ltd - Tablet - 10 Tablet
Prescription required

Merck Ltd - Tablet - 10 Tablet
Prescription required

Zydus Healthcare Pharma - Tablet - 14 Tablet
Prescription required

Shrrishti Healthcare Products(I) Pvt Ltd - 10 S
Prescription required

Sun Pharma - Tablet - 40 mg - 10 S
Prescription required

IPCA Laboratories Ltd - Tablet - 1.25 mg - 10 S
Prescription required

Mankind (Pharma) - Tablet - 10 S
Prescription required
Ajanta Pharma - Tablet - 20 S
Prescription required

Sun Pharma - Capsule - 15 Capsules
Prescription required
Intas Pharmaceuticals Ltd - Tablet - 10 mg - 10 S
Prescription required
Abbott India Limited - Tablet - 21 Tablet
Prescription required

Torrent Pharmaceuticals Ltd - Soap - 125 G

Genfo Bioceuticals Pvt Ltd - Suspension - 170 ml
Prescription required

Novelty Health Shine Pvt Ltd - Tablet - 20 S

Dr Reddys Laboratories Ltd - Gel - 50 G
Prescription required
Dr Reddys Laboratories Ltd - 50 Gms
Prescription required

The Derma Co - Cream - 100 G
Injection - 1 ml
Prescription required
The information on Carbophage XR 500 is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.