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Medically Approved

Minoxidil oral tablet dosage: A detailed guide

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Form and strengthsDosageFAQHow it’s takenCouponOverdoseAsk your doctorBoxed warnings
Doctors prescribe minoxidil oral tablet for severe high blood pressure that’s not treatable with other medications. You usually take it by mouth once per day.
Medically reviewed by Amber R. Watson, PharmD
Updated on

This article describes minoxidil oral tablet’s dosage and strengths and gives details on how to take it. You’ll also find information on cost savings and coupon options for minoxidil. If you want to know more about minoxidil oral tablet, see this overview article. It covers details about the drug’s uses, side effects, and more.

Minoxidil oral tablet is a generic medication. It’s not available in a brand-name version.

Boxed warnings

This drug has boxed warnings about the risk of heart problems, risk of chest pain, and the correct use of the drug. A boxed warning is the most serious warning from the Food and Drug Administration (FDA).

See the end of this article for more information about these warnings.

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Form and strengths of minoxidil

Minoxidil oral tablet comes as follows:

  • Form: tablet, which you’ll take by swallowing
  • Strengths: 2.5 milligrams (mg) and 10 mg

Dosage of minoxidil

This article describes the recommended dosage for minoxidil oral tablet. The drugmaker provides these dosages.

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

Usual recommended dosage of minoxidil in adults

Usually, doctors start by prescribing a low dosage of minoxidil oral tablet. Then, they’ll adjust it over time until the right dosage is reached. Ultimately, your doctor will prescribe the smallest dosage of minoxidil oral tablet that gives the desired outcome.

ConditionStarting dosageMaintenance dosageMaximum dosage
severe high blood pressure5 mg once daily10–40 mg daily as a single dose or divided into multiple doses100 mg daily

Dosages of minoxidil in children

For children ages 12 years and older, the recommended dosage of minoxidil is the same as the dosage for adults.

For children under age 12 years, the recommended dosage is 0.2 mg per kilogram (kg) of body weight once daily. For reference, 1 kg is about 2.2 pounds (lb). Your child’s doctor will then adjust the dosage as needed, up to a maximum of 50 mg daily.

Dosage adjustments for minoxidil

Your doctor will prescribe a dosage of minoxidil oral tablet based on several factors. These include:

  • how severe your condition is
  • your age
  • weight for children less than 12 years old
  • how well your body tolerates minoxidil

Missed dose of minoxidil

Talk with your doctor or pharmacist about what to do about a missed dose of minoxidil. They may advise you to take the missed dose or to skip it and take your next dose as scheduled.

For tips on how to plan your doses of minoxidil oral tablet 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

Frequently asked questions

Below are answers to some commonly asked questions about minoxidil oral tablet and its dosage.

Do older adults need a lower dose of minoxidil?

It depends. Usually, doctors will prescribe older adults (ages 65 and older) a low dose of minoxidil and monitor them closely. Older adults may have liver, kidney, or heart conditions that could affect their minoxidil dosage. Their doctor will increase or decrease their minoxidil dose as needed.

Talk with your doctor if you have questions about the dosage of minoxidil for older adults.

Is minoxidil taken long term?

Yes, doctors typically prescribe minoxidil oral tablet 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 minoxidil oral tablet, talk with your doctor.

How minoxidil is taken

You’ll swallow minoxidil oral tablet 1 or more times daily as prescribed by your doctor. You can cut the tablet if needed to make the right dosage.

Your doctor will likely prescribe other medications that you should take with minoxidil to avoid certain side effects. Be sure to take all medications as prescribed by your doctor.

Your doctor may advise that you take minoxidil around the same time each day. This helps keep a consistent amount of the drug in your body. And that can help the drug work more effectively.

If it’s hard for you to swallow tablets, view this article. It provides suggestions on how to swallow medications that come in pill form.

Also, be sure to talk with your doctor or pharmacist if you’re having difficulty taking your medication. They can offer recommendations about taking it.

Minoxidil coupon

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Overdose of minoxidil

It’s important that you do not take more minoxidil oral tablet than your doctor prescribes. Doing so can lead to harmful effects.

Symptoms of minoxidil overdose

A symptom of minoxidil overdose can include very low blood pressure.

What to do if you take too much minoxidil

If you think you’ve taken too much minoxidil, 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.

What to ask your doctor

This article describes the usual recommended dosage for minoxidil oral tablet. If your doctor prescribes this medication, they’ll determine the dosage that’s best for you.

Do not change your dosage of minoxidil oral tablet without your doctor’s recommendation. You should take minoxidil oral tablet exactly as your doctor prescribes it. Let your doctor know if you have concerns or questions about your treatment plan.

Here’s a list of some possible questions you may want to ask your doctor:

  • How often will you change my minoxidil dose?
  • What other medications do I need to take with minoxidil?
  • How long will I need to take minoxidil?

Boxed warnings for minoxidil

This drug has boxed warnings about the risk of heart problems, risk of chest pain, and the correct use of the drug. A boxed warning is the most serious warning from the FDA.

Risk of heart problems: Minoxidil can worsen heart problems or cause poor heart function. For this reason, your doctor will prescribe a diuretic (water pill) and a beta-blocker to take with minoxidil. These drugs can help lower the risk of heart problems while taking minoxidil. Your doctor will also monitor your heart function.

Risk of chest pain: Minoxidil can cause or worsen chest pain and increase your heart rate. For this reason, your doctor will prescribe a beta-blocker to take with minoxidil. This drug can help lower the risk of these side effects while taking minoxidil. Tell your doctor about any chest, arm, or shoulder pain during minoxidil treatment.

Correct use of the drug: Minoxidil should only be used after treatment with a diuretic and 2 other blood pressure medications that were not successful. It should be started under supervision from your doctor.

You can talk with your doctor to learn more about these warnings.

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.

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