Skip to main content

Is QuilliChew ER a controlled substance?

Medically reviewed by Judith Stewart, BPharm. Last updated on Feb 13, 2023.

Official answer


Yes. QuilliChew ER (methylphenidate) is a schedule II controlled substance.

What is QuilliChew ER?

QuilliChew ER contains methylphenidate, which is a central nervous system (CNS) stimulant commonly used for the treatment of attention deficit hyperactivity disorder (ADHD).

QuilliChew ER is available as extended-release chewable tablets in 20 mg, 30 mg and 40 mg strengths making it suitable for the treatment of ADHD in patients 6 years and older.

What is a Schedule II Controlled Substance?

Drugs placed in Schedule II of the Controlled Substances Act (CSA) have a high potential for abuse and dependence.

Drugs in Schedule II have a currently accepted medical use in the United States or a currently accepted medical use with severe restrictions. Abuse of these drugs may lead to severe psychological or physical dependence.

Examples of Schedule II substances include morphine, cocaine, hydrocodone, oxycodone, fentanyl, and methylphenidate.

  • QuilliChew ER must be stored in a safe place, preferably locked, to prevent misuse.
  • QuilliChew ER must not be given to anyone else. Selling or giving away QuilliChew ER may harm others and is against the law.
  • Any unused or expired QuilliChew ER tablets should be disposed of through a medicine take-back program if available.

U.S. Food and Drug Administration. QuilliChew ER Product Label. Available at [Accessed February 22, 2021]

Related medical questions

Drug information

Related support groups