Glucophage

Black Box Warning

Generic: metformin

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Information reviewed July 24, 2026

Rank #20 in NZ TV Ads
Class: Biguanide

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What is it for?

A first-line oral medication for type 2 diabetes commonly used and searched in New Zealand.

Primary Condition

Type 2 diabetes

How it works

Reduces liver glucose production and improves insulin sensitivity.

Common Side Effects

This is not a complete list of side effects. Always consult with a doctor.

  • Nausea
  • Diarrhea
  • Abdominal discomfort
  • Vitamin B12 deficiency
  • Rare: lactic acidosis

Glucophage FAQs

What is Glucophage used for?

Glucophage (metformin) is a prescription medication used to treat Type 2 diabetes. A first-line oral medication for type 2 diabetes commonly used and searched in New Zealand.

How does Glucophage work?

Reduces liver glucose production and improves insulin sensitivity.

What are the common side effects of Glucophage?

Commonly reported side effects of Glucophage include Nausea, Diarrhea, Abdominal discomfort, Vitamin B12 deficiency, and Rare: lactic acidosis. This is not a complete list — tell your doctor or pharmacist about any side effects you experience.

Does Glucophage have any serious warnings?

Yes. Glucophage carries an FDA Boxed Warning — the agency's most serious safety warning. Read the full prescribing information and talk to your doctor about the risks before starting or changing treatment.

What is the generic name for Glucophage?

The active ingredient in Glucophage is metformin, which belongs to a class of medicines known as Biguanide.

Who makes Glucophage?

Glucophage is manufactured by Merck (generic). It was first approved in 1972.

How can I save money on Glucophage?

You may be able to lower the cost of Glucophage by using a free pharmacy discount card or by comparing prices across pharmacies before you fill your prescription. Savings vary by pharmacy and location.

Common questions about Glucophage

Other Diabetes medications

See more drugs like Glucophage

Quick Facts

Manufacturer

Merck (generic)

Year Approved

1972

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