What is Glimepiride: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Glimepiride is a generic prescription drug used to lower blood sugar in people with Type 2 diabetes. Doctors use it as a second-line or add-on drug when metformin or other drugs are not adequately managing blood glucose levels. Belonging to a class of drugs called sulfonylureas, glimepiride works by stimulating insulin production in the pancreas. Because of this, people taking glimepiride are at a higher risk for low blood sugar than they are with most other diabetes medications. They should be careful to take this drug as instructed, not skip any meals, and be familiar with the signs and symptoms of low blood sugar.

Glimepiride overview

BRAND NAMES:

  • No brand-name versions

Generic Names:

  • Glimepiride

Uses:

  • Treats Type 2 diabetes

Therapeutic Classes:

  • Sulfonylurea antidiabetic

Forms:

  • Tablet

How it’s taken:

  • By mouth

What is Glimepiride used for?

Glimepiride is used along with diet and exercise to control blood sugar levels in people with Type 2 diabetes.

What form(s) does Glimepiride come in

  • Tablet

    • 1 mg

    • 2 mg

    • 4 mg

What are common Glimepiride doses?

  • For Type 2 diabetes: 1–4 mg (8 mg maximum) taken once daily before the first meal

Common Glimepiride prescriptions

  • Glimepiride
    1mg tablet

  • Glimepiride
    2mg tablet

  • Glimepiride
    4mg tablet

How to take Glimepiride

  • Take glimepiride as directed. The dose may need to be changed until the most effective dose is reached.

  • Take this medicine with breakfast or your first main meal of the day.

  • Swallow the tablet with a drink of water.

  • Store glimepiride tablets in a closed container at room temperature.

What to do if you miss a dose of Glimepiride

  • Glimepiride should be taken right before eating breakfast.

  • If you don’t eat breakfast, take the glimepiride dose right before the first large meal of the day. 

  • Ask the prescriber what to do if a dose of glimepiride is missed.

  • If the prescriber tells you to take missed doses, make sure to take a missed dose right before a main meal.

  • Do not take two doses to make up for a missed dose.

Glimepiride contraindications

  • This medicine is not right for everyone. 

  • Do not use it if you have had an allergic reaction to glimepiride or a sulfa drug.

Glimepiride warnings

  • Tell any doctor or other healthcare provider who treats you that you are taking glimepiride.

  • Glimepride treatment requires regular doctor’s visits and blood tests. Keep all appointments.

  • Tell the prescriber if you are pregnant, breastfeeding, or have:

    • Kidney disease

    • Liver disease

    • Heart or blood vessel problems

    • Adrenal gland problems

    • Pituitary gland problems

    • A hereditary disorder called G6PD deficiency

  • Glimepiride can cause serious problems, including:

    • Low blood sugar (hypoglycemia)

    • Increased risk of heart or blood vessel problems

  • Low blood sugar is the biggest risk when taking drugs like glimepiride. People taking glimepiride should be familiar with the signs of low blood sugar.

  • Low blood sugar can cause significant impairment. People taking drugs like glimepiride should be cautious about driving or other risky activities and should avoid or stop these activities when they may be impaired.

Glimepiride interactions

  • To avoid potentially hazardous drug interactions, tell the prescriber about all prescription drugs, over-the-counter medications, and supplements that are regularly used before starting glimepiride, particularly:

    • Nonsteroidal anti-inflammatory drugs such as aspirin or ibuprofen

    • Laxatives

    • Blood pressure medications called ACE inhibitors or beta blockers

    • High cholesterol medications called fibrates

    • Tetracycline or quinolone antibiotics

    • Corticosteroids

    • Anabolic steroids

    • Diuretics (drugs that make you pee)

    • Estrogen hormones, including birth control pills

    • Thyroid hormones

    • Blood thinners called coumarin antibiotics (such as warfarin)

    • Barbiturates

    • Atypical antipsychotic medications

    • Antiviral drugs called protease inhibitors

    • Phenothiazine drugs

    • MAO inhibitors (MAOIs)

    • Drugs that work on the involuntary nervous system, like epinephrine, albuterol, or terbutaline

    • Clarithromycin, cyclophosphamide, danazol, disopyramide, fluconazole, fluoxetine, glucagon, isoniazid, miconazole, niacin, phenyramidol, phenytoin, probenecid, propoxyphene, rifampin, somatropin, sulfinpyrazone

  • If you are also taking a cholesterol medication called colesevelam, take the glimepiride dose at least four hours before you take the dose of colesevelam.

  • Tell other healthcare professionals about glimepiride treatment before they prescribe new drugs.

Glimepiride side effects

Serious side effects

Talk to a doctor if you notice any signs or symptoms of a possible serious side effect, including:

  • Sweating, shaking, trembling, feeling cold, increased hunger

  • Fast or pounding heartbeat, lightheadedness, dizziness

  • Confusion, slurred speech, headache, vision changes

  • Trouble breathing, tiredness, uneven heartbeat, yellow skin or eyes

  • Blistering, peeling, red or purple skin rash

  • Allergic reaction: Itching, rash, hives, swelling in your face, lips, or mouth, throat swelling, chest tightness, trouble breathing

Less serious side effects

  • Headache

  • Weight gain

  • Nausea

  • Dizziness

Find more information about glimepiride side effects here.

Sources:

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