amphetamine and dextroamphetamine, Adderall, Adderall XR

  • Pharmacy Author:
    Omudhome Ogbru, PharmD

    Dr. Ogbru received his Doctorate in Pharmacy from the University of the Pacific School of Pharmacy in 1995. He completed a Pharmacy Practice Residency at the University of Arizona/University Medical Center in 1996. He was a Professor of Pharmacy Practice and a Regional Clerkship Coordinator for the University of the Pacific School of Pharmacy from 1996-99.

  • Medical and Pharmacy Editor: Jay W. Marks, MD
    Jay W. Marks, MD

    Jay W. Marks, MD

    Jay W. Marks, MD, is a board-certified internist and gastroenterologist. He graduated from Yale University School of Medicine and trained in internal medicine and gastroenterology at UCLA/Cedars-Sinai Medical Center in Los Angeles.

What is the dosage for amphetamine and dextroamphetamine?

Adderall usually is taken once or twice a day. Doses should be separated by at least 4-6 hours. The recommended dose is 2.5 to 60 mg daily depending on the patient's age and the condition being treated. Adderall XR is taken once daily. The recommended dose is 5-40 mg daily administered in the morning. The entire contents of the Adderall XR capsules may be sprinkled into applesauce and consumed immediately. Amphetamines should be administered during waking hours and late evening doses should be avoided in order to avoid insomnia.

Which drugs or supplements interact with amphetamine and dextroamphetamine?

Amphetamines should not be taken with monoamine oxidase (MAO) inhibitor drugs including phenelzine (Nardil), tranylcypromine (Parnate), and Zyvox; use of amphetamine within 14 days of using MAO inhibitor drugs should be avoided. Patients receiving antihypertensive medications may experience loss of blood pressure control with amphetamine. Antacids may increase absorption of amphetamine salts and increase their effectiveness and side effects.

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