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Sunday, July 18, 2010 Lisa, Community Member, asks

Q: is .5 mg the lowest dose for xanax? and what is the highest dose?

i just took 2 .5 mg of xanax b/c i was not feeling much from just taking one .5mg of, i was just curious if .5mg is the lowest dose and out of sheer curiousity what is the highest dose of xanax normally prescribed to pt's??

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Answers (2)
Eileen Bailey, Health Guide
7/18/10 9:18pm

Thank you for your question and welcome to


I am not a medical professional and would not be able to give you medical advice.


In the U.S. Xanax is available in .5 mg, 1 mg, 2 mg and 3 mg.


For more information:





Merely Me, Health Guide
7/19/10 11:09am

Hi Lisa


On this Psychology and Counseling site they report that some people start off with an even smaller dose of .25 mg.  They say some people go up to 4mg but divided into smaller doses. 


This is definitely a question you want to ask your doctor.  It seems you took a much higer dose than what was prescribed to you.  I would worry about doing this not under a doctor's supervision.  It is possible to overdose on xanax with potentially very serious consequences.


We have a ton of information on our site about xanax.  It probably would be good to read some of it to understand how it works and about dosage.


Let us know if we can be of any more help to you and please do talk to your doctor about your dosage.  Thank you for your question.

Lisa, Community Member
7/20/10 5:19am

thank you for your was very helpful!

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By Lisa, Community Member— Last Modified: 05/19/14, First Published: 07/18/10