Is it safe to take 0.50mg xanax for anxiety and panic once and then stop and then take it again? or will i get dependancy or withdrawals or rebound anxiety? its a small dose so id assume no?

It is likely better for you to take it occasionally. Habituation is a term used to describe an emotional rather than a drug caused dependency. If you use it occasionally it should have minimal chances of causing either dependency/habituation or withdrawal symptoms. If you are not working with a life coach to learn stress management you should start. No side effects to learning.

Taking a benzodiazepine, like Xanax, as needed is the best way to take this class of medication. Well tolerated, few side effects, and less likely for dependency or habituation