How Long Does Xanax Last?

How Long Does Xanax Last?

How long does Xanax last

Alprazolam, more generally known by its brand name. Xanax, is a drug indicated to treat panic and anxiety disorders. Xanax is in a class of medications called as benzodiazepines. It is a considered a mild tranquilizer.

Xanax helps to relax the nerves and induces a feeling of relaxation. In high doses, anyway, it has the potential to be abused and can cause to dependence. For this reason, it is listed as a federal controlled substance.

If you are new to taking this drug, you may be wondering how long the effects will last in your body, factors that might pressure how long Xanax stays in your system, and what to do and if you decide to prevent taking it.

How long does Xanax last in your system

Xanax is considered a little-acting benzodiazepine drug. After taking Xanax in pill form, top levels are found in your blood 1-2 hours later. The average half-life of Xanax in the blood is 11.2 hours in fit adults, meaning that half of the drug has been metabolized and eliminated in the urine in that time frame.

It takes about  half-lives of 98 percent of a drug dose to clear the body, so Xanax takes 2-4 days to be completely eliminated from the body.


As with all drugs, Xanax can be noticed in your hair starting 2-3 weeks after and for up to ninety days after your last dose.


Xanax can be noticed in saliva for up to 2.5 days.


Blood levels may be performed as a screening test or in cases of treatment for a suspected overdose, but they can just detect if you have taken Xanax in the last twenty-four hours.


A urine drug screen, such as those that are performed for employment, will test positive for benzodiazepines for five days and up to a week after a dose. For populations who metabolize Xanax more slowly, such as obese, elderly, and those with alcoholic liver disease, that time maybe even longer.

False positive testing

There are some drugs that cross-react with immunoassay urine drug screens. The antidepressant drug Zoloft and recommendation non-steroidal anti-inflammatory drug Daypro lead to false-positive urine screens for benzodiazepines like Xanax.

If you are taking Xanax by prescription and you have a drug test or screening, tell the testing laboratory so they can rightly interpret your outcomes.

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