Xanax three times a day every day is not an incredibly high dose or anything, but tolerance will start to be an issue at some point. I'm not saying that's what you're going through now, but I believe you should inquire about
a longer acting benzodiazepine such as Valium or Klonopin.
Simply put, Xanax is not a maintenance drug. It's not designed to be dosed like you're taking it...it's designed to be taken only as needed. The longer-acting benzos work on a different principle and are indicated for longer term use. Tolerance is only an issue at very high doses with these drugs, and because they have a longer half life you should expect "around the clock" coverage, so to speak, as they approach a steady plasma level.
I would talk to your doctor (hopefully a psychiatrist) about
this as soon as possible, because the longer you're on Xanax the more difficult the switch will be, in theory. And believe me, you don't want to reach a point where you're building tolerance to Xanax. I'm sure others will follow and say why.
I'm also curious as to how exactly your medication is prescribed. Is up to three times per day as needed, or just three times a day?
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