Possible Initial Side Effects
of Stimulant ADHD Medications

When beginning treatment with ADHD stimulant medications there is a good chance that you will not experience any side effects from the medication.  

However, some patients experience side effects for a short period of time when beginning medication.  

It is good to know what to expect, or what to look for, so that you aren’t alarmed if you do experience one or more of them.

Tips for patients beginning a stimulant medication treatment for ADHD:

  • Stimulant ADHD medications (Adderall, Focalin, Vyvanse, Adzenys, Dexedrine, etc.) might cause initial side effects for a short period of time.  

  • Possible side effects typically include one or more of the following:  nervousness, jitters, insomnia, decreased appetite, headache, and dry mouth.

  • Initial side effects are usually temporary and typically resolve after approximately two weeks  —  but might last up to a month.

  • The side effects listed above are common and are not dangerous.  


Please know that we are always available to you.  

Should you experience any side effects other than the common ones listed above, please reach out to us for guidance at 310-360-5917 or email us at care@millenniummedicalassociates.com

 If it’s an emergency please call 911.