Glipizide oral tablets dosage: A detailed guide

Key takeaways

• Glipizide is available in immediate-release (IR) and extended-release (ER) forms, each with different dosages and timing requirements, to help manage blood sugar levels in adults with type 2 diabetes.
• Dosage adjustments are common and are based on individual factors like kidney or liver function and other medications you may be taking, so it’s important to consult your doctor for personalized guidance.
• It is important to take glipizide as prescribed, with the IR form 30 minutes before a meal and the ER form with the first meal of the day. Missing doses or overdosing can lead to serious side effects.

Overview

This article describes glipizide oral tablets’ dosages, their strengths, and details on how to take them. You’ll also find information on cost savings and coupon options for glipizide.

If you want to know more about glipizide oral tablets, see this overview article. It covers details about the drug’s uses, side effects, ways to save on cost, and more.

Glipizide oral tablets are generic medications. This article discusses two oral tablets: glipizide immediate-release (IR) tablet and glipizide extended-release (ER) tablet.* The IR tablet isn’t available in a brand-name version. But the ER tablet is a generic version of the brand-name drug Glucotrol XL.

Glipizide also comes combined with another drug in forms that you swallow. But those forms aren’t described in this article. To learn more about those forms, talk with your doctor.

*  With the IR tablet, the drug releases into your body right away. With the ER tablet, the drug releases into your body slowly over time.

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Forms and strengths of glipizide

Glipizide oral tablets come as follows:

Forms and strengths:

• immediate-release (IR) tablet that you swallow: 2.5 milligrams (mg), 5 mg, 10 mg
• extended-release (ER) tablet that you swallow: 5 mg

With the IR tablet, the drug releases into your body right away. With the ER tablet, the drug releases into your body slowly over time.

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Dosage of glipizide

This article describes the recommended dosages for glipizide oral tablets. In some cases, doctors may adjust your dosage from those shown below.

If your doctor prescribes this medication, you should take the dosage they prescribe. Your doctor will determine the dosage that best meets your needs. Do not change your dosage of glipizide oral tablets without your doctor’s recommendation.

Usual recommended dosages of glipizide in adults

Doctors prescribe glipizide to help manage blood sugar levels in adults who have type 2 diabetes. Along with taking glipizide, doctors recommend diet and exercise.

Usually, doctors start by prescribing a low dosage of glipizide oral tablets. They’ll learn how the medication affects your blood sugar levels. Then they’ll adjust the dosage over time until the right dosage is reached. Ultimately, your doctor will prescribe the smallest dosage of glipizide oral tablets that gives the desired outcome.

The following table shows recommended dosages of the immediate-release (IR) and extended-release (ER) oral tablets. The dosages are in milligrams (mg). If your total daily dose of glipizide IR is 15 mg or more, you’ll likely take it in smaller doses throughout the day.

* If your total daily dose of glipizide IR is 15 mg or more, you’ll likely take it in smaller doses throughout the day.

Dosage adjustments for glipizide

Your doctor will prescribe a dosage of glipizide oral tablets based on several factors, including:

• the specific condition being treated and its severity
• your age
• other health conditions you may have

Your doctor may reduce your starting dosage to 2.5 mg in some cases. Examples are if you have liver or kidney problems or are an older adult ages 65 years or older.

Frequently asked questions about glipizide dosage

Below are answers to some commonly asked questions about glipizide oral tablets and their dosages.

Can I take glipizide twice daily or three times a day?

In some cases, you might. Glipizide immediate-release oral tablet may be prescribed once per day, twice per day, or three times per day. You’ll take each dose 30 minutes before a meal. 

Glipizide extended-release tablets are prescribed once per day. You’ll take your dose with breakfast or your first meal of the day.

To learn when you should take your dose of glipizide, talk with your doctor or pharmacist.

Will I take a different dose of glipizide if I am also taking metformin?

It’s possible that you might. The drug manufacturer hasn’t recommended a dosage change for taking glipizide along with the drug metformin. But your doctor will prescribe the glipizide oral tablets’ dosage that’s right for you.

Glipizide and metformin both work to lower blood sugar levels. Taking glipizide along with metformin can increase your risk of hypoglycemia (low blood sugar).

If you’re at risk of low blood sugar, your doctor may adjust your medication dosages. They may also adjust your dosage if you have liver or kidney problems or are an older adult. (These are people age 65 years or older.)

For more details on the recommended dosages of glipizide, see the “Dosage of glipizide” section above.

Glipizide is available combined with metformin in a dosage form that you take by mouth. To learn more about this combination drug, talk with your doctor.

Is glipizide taken long term?

Yes, doctors typically prescribe glipizide oral tablets as a long-term treatment. If you and your doctor determine that it’s safe and effective for your condition, you’ll likely take it long term.

If you have questions about how long you should take glipizide oral tablets, talk with your doctor.

What should I do for a missed dose of glipizide?

Talk with your doctor or pharmacist right away if you realize you forgot to take a dose of glipizide oral tablets. They may advise you to take the missed dose. Or they may advise you to skip it and take your next dose as scheduled.

For tips on how to plan your doses of glipizide oral tablets and avoid missing a dose, read this article. You could also try:

• downloading a reminder app on your phone
• setting an alarm
• putting a note where you’ll see it, such as on your calendar, bathroom mirror, or bedside table

How glipizide is taken

You’ll swallow glipizide immediate-release (IR) and extended-release (ER) oral tablets. The frequency of your dose will depend on the drug form and your treatment plan. You might take it one time or several times per day as your doctor prescribes.

The timing of your dose depends on the form of glipizide your doctor prescribes, as follows:

• glipizide IR oral tablet: Take each dose 30 minutes before a meal.
• glipizide ER oral tablet: Take your dose once per day with breakfast or your first meal of the day.

If you take your dose without eating a meal at the specified time, your blood sugar could become too low. If you cannot eat a meal, you should skip your dose of glipizide.

You can chew, crush, or break the IR tablets. They have a score line (groove) to make splitting them easier. But you should not chew, crush, or break glipizide ER oral tablets. Doing so affects how the drug is released slowly into your body. This may increase your risk of side effects.

Overdose of glipizide

It’s important that you do not take more glipizide oral tablets than your doctor prescribes. Doing so can lead to serious side effects.

Symptoms of glipizide overdose

Symptoms of an overdose can include:

• severely low blood sugar
• seizure
• loss of consciousness
• coma 

What to do if you take too much glipizide

If you think you’ve taken too much glipizide, call your doctor or pharmacist right away. Or you could call 800-222-1222 to speak with someone at America’s Poison Centers. You can also use its online resource. If you have severe symptoms, call 911 or a local emergency number immediately. You can also go to the closest emergency room.

Summary

Glipizide oral tablets come in two forms: extended-release and immediate-release. The dosages for each form may be different.

If you have any concerns about your glipizide dosage, reach out to a healthcare professional.

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Disclaimer: Optum Perks has made every effort to make certain that all information is factually correct, comprehensive, and up to date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional. You should always consult your doctor or another healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses.