Its generic name is serdexmethylphen-dexmethylphen. This combination medication is used to treat attention deficit hyperactivity disorder-ADHD. It works by changing the amount of certain natural substances in the brain. Serdexmethyphenidate and dexmethylphenidate belong to the class of drugs known as stimulants. This product can help increase your ability to pay attention, stay focused on an activity, and control behavior problems. It may also help you to organize your tasks and improve your listening skills.

Who shouldn’t take Azstarys?

Do not take Azstarys if you or your child are:

Allergic to serdexmethyphenodate, methylphenidate, or any of the ingredients. Taking or have stopped taking within the past 14 days a medicine used to treat depression called a monoamine oxidase inhibitor (MAOI). 


Read the medication guide provided by your pharmacist before you start taking this drug and each time you get a refill. If you have any questions, ask your doctor or pharmacist. Take this medication with or without feed as directed by your doctor, usually once daily in the morning. Taking this medication late in the day may cause trouble sleeping (insomnia).

Side effects 

Like most drugs, Azstarys may cause mild or serious side effects. The list below describes some of the more common side effects THAT Azstarys may cause. This list doesn’t include all possible side effects.

Mild side effects of Azstarys

Mild side effects of this drug include:

Weight loss

Decreased appetite

Trouble sleeping 



Upset stomach



Belly pain

Increased blood pressure

Fast heart rate

Quick changes in emotion

Mild anxiety

Mild allergic reaction

Mild side effects of many drugs may go away within a few days to a couple of weeks. But if they become bothersome, talk with your doctor or pharmacist.

Serious side effects

Serious side effects of Azstarys include:

Prolonged erection

Slow growth in children

Serious heart problems

Severe increase in heart rate 

Boxed warnings: risk of misuse and risk of dependence

Severe allergic reaction


See also the warning section. Before taking this medication, tell your doctor or pharmacist if you are allergic to this drug. This product may contain inactive ingredients, which can cause allergic reactions or other problems.

Before using this medication, talk with your doctor or pharmacist about your medical history, especially of high blood pressure, blood circulation problems, and heart problems.



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