Metformin

Black Box Warning

Generic: metformin

Share

Information reviewed July 24, 2026

Rank #43 in US TV Ads
Class: Biguanide

Save on Metformin

Compare pharmacy prices or talk to a doctor online.

Affiliate links — TVPills may earn a commission at no extra cost to you. Not medical advice.

What is it for?

The most commonly prescribed first-line oral medication for type 2 diabetes and one of the most-searched drugs online.

Primary Condition

Type 2 diabetes

How it works

Reduces glucose production by the liver and improves the body's sensitivity to insulin.

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

Metformin FAQs

What is Metformin used for?

Metformin (metformin) is a prescription medication used to treat Type 2 diabetes. The most commonly prescribed first-line oral medication for type 2 diabetes and one of the most-searched drugs online.

How does Metformin work?

Reduces glucose production by the liver and improves the body's sensitivity to insulin.

What are the common side effects of Metformin?

Commonly reported side effects of Metformin 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 Metformin have any serious warnings?

Yes. Metformin 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 Metformin?

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

Who makes Metformin?

Metformin is manufactured by Various (generic). It was first approved in 1995.

How can I save money on Metformin?

You may be able to lower the cost of Metformin 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 Metformin

Other Diabetes medications

See more drugs like Metformin

Quick Facts

Manufacturer

Various (generic)

Year Approved

1995

Explore Metformin

Talk to a Doctor

Get a prescription or ask about Metformin from a licensed physician online — no waiting room.

These are affiliate links to our telehealth partners. TVPills may earn a commission. This is not medical advice.

Free Discount Card

Show a free pharmacy discount card and save on every refill of Metformin — no insurance needed.

These are affiliate links. TVPills may earn a commission at no extra cost to you.

Compare Prices

Find discount coupons and lowest prices at trusted pharmacies.

These are affiliate links. TVPills may earn a commission at no extra cost to you.

TVPills

A reference tool to help identify prescription medications and supplements seen in television advertising. This is not medical advice. Always consult a healthcare professional.

TVPills is independent and not affiliated with, endorsed by, or sponsored by any drug manufacturer or brand. All trademarks are the property of their respective owners. Some links are affiliate links; we may earn a commission at no extra cost to you.