What is the maximum daily dose of Adderall (amphetamine and dextroamphetamine)?

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Last updated: March 18, 2025View editorial policy

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From the Guidelines

The maximum daily dose of Adderall should not exceed 40 mg per day for adults, as recommended by the most recent and highest quality study 1. When determining the maximum daily dose of Adderall, it is essential to consider the potential risks and benefits, as well as individual factors such as body weight, metabolism, and medical conditions.

  • The study published in 2022 in the journal Pharmacology and Therapeutics 1 provides the most up-to-date and reliable guidance on the use of stimulants, including Adderall, for the treatment of ADHD.
  • According to this study, the maximum daily dose of Adderall for adults is typically 40 mg per day, although some doctors may prescribe up to 60 mg daily in rare cases.
  • For children aged 6-12, the maximum daily dose is usually 30 mg daily, while adolescents aged 13-17 typically should not exceed 40 mg daily.
  • It is crucial to follow the doctor's specific dosing instructions and to monitor the patient's response to the medication, as individual factors can affect the appropriate dosage.
  • Exceeding the prescribed maximum dose can lead to serious side effects, including increased blood pressure, heart rate abnormalities, severe anxiety, and potential for addiction.
  • The medication should be started at a low dose and gradually increased until the optimal therapeutic effect is achieved, with the last dose taken several hours before bedtime to avoid sleep disturbances.
  • Regular follow-up appointments should be made to assess the patient's response to the medication and to adjust the dose as needed, taking into account factors such as symptom control, side effects, and medication adherence.

From the Research

Maximum Daily Dose of Adderall

The maximum daily dose of Adderall (amphetamine and dextroamphetamine) is not consistently defined across studies, but some information can be gathered from the provided evidence:

  • According to 2, the standard recommended dosage for humans with ADHD or narcolepsy is 5-60 mg daily.
  • 3 reports a mean end dose for responders of 10.77 mg/day (0.14 mg/kg/day) in a study of adults with ADHD.
  • 4 mentions that the included studies investigated mixed amphetamine salts (MAS) at doses of 12.5 mg/d to 80 mg/d.
  • 5 discusses the inconsistency in dose maxima in different jurisdictions and the need for clinician experience to guide optimal maximal dosing.
  • 6 introduces Adderall XR, a long-acting stimulant for single daily dosing, but does not specify a maximum daily dose.

Key Points

  • The maximum daily dose of Adderall is not universally defined.
  • Recommended dosages range from 5-60 mg daily, with some studies investigating higher doses.
  • Clinician experience and individual patient response may guide optimal dosing.
  • More research is needed to determine the optimal maximum daily dose of Adderall.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Adderall® (amphetamine-dextroamphetamine) toxicity.

Topics in companion animal medicine, 2013

Research

Amphetamines for attention deficit hyperactivity disorder (ADHD) in adults.

The Cochrane database of systematic reviews, 2018

Research

Stimulant prescribing for attention deficit hyperactivity disorder (ADHD): what guides clinicians in their choice of an upper limit for dose titration?

Australasian psychiatry : bulletin of Royal Australian and New Zealand College of Psychiatrists, 2020

Research

Adderall XR: long acting stimulant for single daily dosing.

Expert review of neurotherapeutics, 2004

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Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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