Quillivant XR is a prescription drug. It contains the active ingredient methylphenidate and is used for attention deficit hyperactivity disorder (ADHD). Quillivant XR is a liquid oral suspension that’s taken once per day.

Quillivant XR belongs to a group of drugs called stimulants. The active ingredient in Quillivant XR is methylphenidate. “XR” stands for extended release, which means the active ingredient is slowly released into your body throughout the day.

This article describes the dosages of Quillivant XR, as well as its strengths and how to take it. To learn more about Quillivant XR, see this in-depth article.

Keep reading for more details about the dosages of Quillivant XR.

What are the forms of Quillivant XR?

Quillivant XR is available as a powder that your pharmacist will mix with water to make a liquid oral suspension. It comes with banana flavoring.

What strengths does Quillvant XR come in?

Quillivant XR comes in one strength of 25 milligrams (mg) in 5 milliliters (mL) of solution.

What are the usual dosages of Quillvant XR?

Your doctor will likely start you on a low dosage and adjust it over time to reach the right amount for you. They’ll ultimately prescribe the smallest dosage that provides the desired effect.

The information below describes dosages that are commonly used or recommended. But be sure to take the dosage your doctor prescribes for you. They’ll determine the best dosage to fit your needs.

What are the usual dosages of Quillivant XR for children?

Quillivant XR is used to treat ADHD in children ages 6­ years and older.

The usual starting dose is 20 mg. You’ll take this dose once per day. After a week, your doctor may increase your dosage to 30 mg or 40 mg once per day. Your doctor may continue to increase your dose each week until they find the amount that’s right for you. The maximum dosage per day is 60 mg.

Dosage for ADHD in adults

The adult dosage of Quillivant XR is the same as the dosage for children ages 6 years and older. To learn more, see the “What are the usual dosages of Quillivant XR for children?” section just above.

How to take Quillivant XR

Quillivant XR is available as a powder that your pharmacist will mix with water to make a liquid oral suspension.

It’s usually taken once per day in the morning. You may take this medication with or without food.

Shake the medication bottle for at least 10 seconds before each use. Use the oral syringe that comes with Quillivant XR to measure each dose. Your doctor will tell you how many mL to take for each dose.

Long-term use

Is Quillivant XR used long term?

Yes, Quillivant XR may be used 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.

Do not take more Quillivant XR than your doctor prescribes, as this can lead to harmful effects.

Effects of overdose

An overdose of stimulants, such as Quillivant XR, can lead to harmful effects. Some examples include:

What to do in case you take too much Quillivant XR

Call your doctor right away if you think you’ve taken too much Quillivant XR. You can also call 800-222-1222 to reach America’s Poison Centers or use its online resource. But if you have severe symptoms, immediately call 911 (or your local emergency number) or go to the nearest emergency room.

Disclaimer: Healthline 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.