This question has also been asked and answered here: How long will Xanax stay in your system for a urine test?
The mean plasma elimination half-life of Xanax is reported to be 11.2 hours. The full range is from 6.3 to 26.9 hours in healthy adults.
For a drug to be totally eliminated from your system it takes 5.5 times the half life.
If we take the maximum time of 26.9 hours times 5.5, it will be in your system for approximately 148 hours i.e. 6 days, after your final dose.
Sorry, took some today. This happens to be the hardest narcotic to recover from. Everytime u urinate(sorry, I know that is distusting), you only release 1% from your system so if you are asking because of a UA, I strongly recommond you take as little as 1 mg and a half because thats the only way it won't show up in 4 days. Its an ugly addition, unfortunately it is the only drug that makes life liveable sometimes. I would have been dead if I hadn't stayed with them for seven years.
Now I know that all of these answers may be true, and I'm young but i've done plenty of research and where most people and websites even say that it stays in your system for 3-6 days.. Some healthcare professionals say it can stay in your system if abused over a long period of time for 30-60 days. Only reason I know this is because I was being treated with Suboxone at a clinic. At this clinic we were drug tested every time we came in to see the doctor. They can't stress enough how dangerous any benzodiazepine combined with any opiate, especially with suboxone can be. It can be DEADLY! Despite that, after I started going to the clinic I stopped using xanax completely, I never used any benzo's at all during treatment. Now this is where I say these answers can be wrong...
When I first started to see my doctor my drug screenings came back positive for Benzodiazepine for 40 days into the treatment. At the clinic I went to they used a dip stick drug test for immediate results and then the urine sample was shipped off to a lab for final results and toxin levels.So whether or not the benzo's stayed in my system that long or not is on my medical records there. But I believe that my answer should definitley be taken into consideration.
On the question of Xanax taken with Suboxone. These two drugs should never be taken together. They create a synergistic effect that increases the potency of each medication. Suboxone does not block the effects of Xanax. They work on two totally different parts of the brain. Taken together than can cause you to stop breathing. So you won't even know you are dying. I know this from personal experience. Thanks to the help of God and a very special group of people, I don't choose to do that today... and that, in itself, is a miracle.
I take Xanax twice a year right before a dental appt so I know exactly what day I took the medicine and how much I took. I took ONE 0.5mg dose of Xanax and had it show up on a pre-employment drug screen 6 WEEKS later so it can be detected in the urine a long time. It may not be acting on your system for that long but it can show up in urine for a long time after you take it. I'm NOT a chronic user as I take one or maybe two the same day as my dental appts twice a year and that is it. If you are asking because of a drug screen, I wouldnt take it for at least two months before you do a clean UDS free of Xanax metabolites.
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