Starbuck, same thing has happened to me in the 20 yrs that I've had anxiety/depression. It happens sometimes.
I was on Paxil for quite some time and I never got addicted to it. But then I never got addicted to Xanax, either, and they say that is a really bad one for addiction. It's not that I'm not an addictive personality, either, because I've smoked since I was 13. I'm a grandma now.

LOL
The best thing to do is not worry about it until and IF it happens.
<font color=blue>"Our doubts are traitors and make us lose the good we oft might win by fearing to attempt" --Shakespeare</font color=blue>
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Psalm 119:105 Thy word is a lamp unto my feet, and a light unto my path.