Metformin ER 750mg

Generic For: Glucophage

Metformin ER 750mg (brand name Glucophage XR) is an extended-release biguanide medication used alongside diet and exercise to improve blood sugar control in adults with type 2 diabetes. It is one of the most commonly prescribed first-line treatments for type 2 diabetes. After a licensed provider reviews your prescription, your order ships from a licensed U.S. pharmacy.

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100-day supply · $0.25/tablet

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  3. Our licensed U.S. pharmacists fill your prescription
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Buy Metformin ER 750mg Online

An extended-release biguanide for type 2 diabetes and blood sugar control

Metformin ER 750mg Quick Facts

Drug classBiguanide antidiabetic
TreatsType 2 diabetes, blood sugar control
FormTablet
Typical dosingTake 1 tablet by mouth once daily with the evening meal.
Prescription requiredYes — prescription only

What Is Metformin ER 750mg?

Metformin ER is an extended-release form of metformin, a biguanide medication that helps lower blood sugar in adults with type 2 diabetes. It works by reducing the amount of glucose your liver produces, decreasing glucose absorption in the intestines, and improving your body's sensitivity to insulin. The extended-release tablet dissolves slowly, allowing once-daily dosing and often causing fewer stomach-related side effects than immediate-release metformin. It is used together with diet and exercise, and may be taken alone or with other diabetes medications.

What Does Metformin ER 750mg Treat?

Type 2 diabetes mellitus in adults
Improving glycemic (blood sugar) control
Adjunct to diet and exercise
Used alone or in combination with other antidiabetic medications, including insulin

Metformin ER 750mg Dosage

Take 750mg by mouth once daily with the evening meal.
Dose may be increased by 750mg weekly as directed by your provider.
Maximum: 2000mg once daily; swallow whole — do not crush or chew.

Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.

Metformin ER 750mg Side Effects

Common side effects

  • Diarrhea
  • Nausea
  • Upset stomach or indigestion
  • Gas (flatulence)
  • Abdominal discomfort
  • Headache
  • Metallic taste
  • Decreased vitamin B12 levels with long-term use

Serious side effects

Stop taking this medication and seek medical attention right away if you experience:

  • Lactic acidosis (muscle pain, trouble breathing, unusual tiredness, stomach pain, feeling cold)
  • Severe hypoglycemia, especially when combined with insulin or sulfonylureas
  • Signs of vitamin B12 deficiency (numbness, tingling, anemia)
  • Severe allergic reaction (rash, swelling, difficulty breathing)
  • Signs of kidney problems (change in urination, swelling)

Warnings & Interactions

Boxed warning: rare but serious risk of lactic acidosis; seek emergency care if symptoms occur
Contraindicated in severe kidney impairment (eGFR below 30 mL/min/1.73m²)
Contraindicated in metabolic acidosis, including diabetic ketoacidosis
Temporarily stop before iodinated contrast imaging procedures as directed
Avoid excessive alcohol use, which increases lactic acidosis risk
Use caution with carbonic anhydrase inhibitors (e.g., topiramate) and other drugs affecting kidney function
Not for treating type 1 diabetes

Tell your prescriber about all medications, supplements, and health conditions before starting metformin er 750mg.

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Frequently Asked Questions

What is metformin ER?

Metformin ER is the extended-release form of metformin, a first-line medication for type 2 diabetes. The tablet releases medication slowly over the day, allowing once-daily dosing with the evening meal and often causing fewer digestive side effects than immediate-release metformin.

Do I need a prescription for Metformin ER 750mg?

Yes. Metformin ER is a prescription-only medication in the United States. A licensed healthcare provider must review your health information and issue or confirm a valid prescription before we can dispense it.

How does ordering and shipping work?

Place your order online and provide your prescription or complete a provider review. Once a licensed provider verifies your prescription, your medication is dispensed and shipped from a licensed U.S. pharmacy, and a pharmacist is available for questions.

What is the difference between metformin and metformin ER?

Both contain the same active ingredient, but metformin ER releases it slowly so it can be taken once daily, while immediate-release metformin is usually taken two to three times daily. Many people experience fewer stomach-related side effects with the ER version. Do not switch forms without your provider's guidance.

What are the most common side effects of metformin ER?

The most common side effects are digestive, including diarrhea, nausea, gas, and stomach discomfort, and they often improve over time. Taking the tablet with your evening meal can help. Contact your provider if side effects persist or are severe.

Can I drink alcohol while taking metformin ER?

Excessive alcohol should be avoided because it increases the risk of lactic acidosis, a rare but serious side effect, and can affect blood sugar levels. Ask your provider what amount, if any, is safe for you.

What should I do if I miss a dose?

Take the missed dose as soon as you remember with food, unless it is almost time for your next dose — in that case, skip the missed dose. Do not take two doses at once to make up for a missed one.