Dexedrine Dosage

The Dexedrine dosage your healthcare provider recommends is based on several factors, such as the condition for which you are being treated, your age, other medical conditions you have, and other medications you are taking. When it comes to Dexedrine dosing for ADHD, the daily dose of the drug may start at as little as 2.5 or 5 mg once a day and will rarely exceed 40 mg a day. Your Dexedrine dose may come in tablet form or as long-acting Spansules. Either form should be taken at the same time every morning.

Dexedrine Dosage: An Overview

The dose of Dexedrine® (dextroamphetamine sulfate) prescribed by your healthcare provider will vary depending on a number of factors, including:
 
  • The condition being treated (ADHD or narcolepsy)
  • Your age
  • Other medical conditions you may have
  • Other medications you may be taking.
     
As is always the case, do not adjust your dose unless your healthcare provider specifically instructs you to do so.
 

Dexedrine Dosing for ADHD

Refer to the following table for the Dexedrine dosing for children and teenagers with ADHD:
 
Age Dexedrine Dosage Maximum Dexedrine Dosage
3 to 5 years old 2.5 mg once daily (tablet only) 40 mg total daily (rarely, dosage may need to be higher)
6 years and older 5 mg once or twice daily (tablets), or 5 to 10 mg once daily (Spansules®) 40 mg total daily (rarely, dosage may need to be higher)
 
Generally, the lower dosage of Dexedrine should be tried first. The dosage should be increased slowly and only if necessary.
 

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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;
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