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View metformin savings options available to you including Manufacturer Coupons, Rx Advantage Savings Card, Canadian Prescription Savings or metformin Patient Assistance Program.

Programs are suitable for individuals who want to buy metformin without insurance, with insurance or for those who are underinsured. You can pay as little as $0 per fill.*

Manufactured by various FDA-approved generic manufacturers.

*Applicable to Drug Coupons & Patient Assistance Programs

This content is intended for US audiences only

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    Save up to 90%

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Navin Khosla NowPatientGreen tick
Updated on 24 Apr 2024

Learn more about metformin

What dosages is metformin available in?

What dosages is metformin available in?

metformin is available as a 500 mg and 1,000 mg extended-release oral tablet.

What is metformin used for?

What is metformin used for?

metformin is a biguanide that is used to treat type 2 diabetes.

How does metformin work?

How does metformin work?

metformin is a biguanide, which uses many methods to lower your blood sugar. It lowers the amount of sugar your body makes and absorbs from food. It also helps your body respond better to insulin.

How do I take metformin?

How do I take metformin?

metformin is typically taken by mouth with a starting dose is 500 mg with your evening meal. If needed, your provider might raise your dose as long as you’re not having bad side effects. The maximum total dose is 2,000 mg daily.

Is it safe for me to take metformin?

Is it safe for me to take metformin?

metformin is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not use this medication if you have severe renal impairment (eGFR below 30 mL/min/1.73 m2), a hypersensitivity to metformin, or acute or chronic metabolic acidosis, including diabetic ketoacidosis, with or without coma.

metformin Common Side Effects

metformin Common Side Effects

Common side effects of metformin include:

  • Diarrhea
  • Nausea and vomiting
  • Stomach pain
  • Constipation
  • Bloating
  • Heartburn
  • Gas
  • Dizziness
  • Headache
metformin Serious Side Effects

metformin Serious Side Effects

Serious side effects are rare with metformin. Contact your healthcare provider immediately if you experience any of the following.

  • Lactic acidosis: muscle pain, severe abdominal pain, shallow breathing, tiredness, weakness, change in heartbeat
Effects of other drugs, drug classes and over-the-counter products on metformin

Effects of other drugs, drug classes and over-the-counter products on metformin

The following medications may interact with metformin:

  • Carbonic anhydrase inhibitors – May increase risk of lactic acidosis
  • Drugs that reduce metformin clearance (such as ranolazine, vandetanib, dolutegravir, and cimetidine) – May increase the accumulation of metformin
  • Alcohol – Can potentiate the effect of metformin on lactate metabolism
Who makes metformin?

Who makes metformin?

Various FDA-approved generic manufacturers

Is metformin safe in pregnancy?

Is metformin safe in pregnancy?

It is not known if metformin will harm your unborn baby. You should talk to your healthcare provider before taking this medication if you are pregnant.

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What to do if you missed your metformin dose

The FDA's medical product safety reporting program for health professionals, patients and consumers.

Learn more about reporting side effects
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Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

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