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How Long Does Xanax Stay In Your Blood?

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    Xanax belongs to a category of drugs known as benzodiazepines. This family includes antidepressants like Valium and Librium. This category of drugs usually gives good results if taken at a correct dosage. The dosage depends from person to person, but if there is no sedation it would not usually be regarded as excessive.  

    Xanax is an addictive drug if used in a high dosage over a long period of time, and has the side effects of sedation and decreased agitation. It also causes withdrawal symptoms if stopped, and can even be the cause of seizures if stopped suddenly. One should consult the doctor and decrease the dosage gradually and then stop if one feels the need.

    Xanax generally stays in the blood for around 24 to 36 hours, it can be detected in urine test for up to a week or so.
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    Also note that there is a time released version of Xanax out (so they could quash the generics) and it would be called Xanax XR or the like. Now that would stay in even longer. Xanax though is not good for general anxiety IMO except in extreme cases since it's spike off effectiveness is sharp. Note the chart below and know that a Half-life is the time it takes a drug to go to 1/2 it's peak concentration, what is left then again falls to 1/2 in another half life. But in the chart Xanax is relatively short acting so the decreased anxiety can rebound on you and you'll possibly feel worse,...
    ============equ-dose=peak====1/2 life=
    Alprazolam .5 XANAX 1 - 2 9 - 20
    Bromazepam 3.0 .5 - 4 8 - 30
    Chlordiazepoxide 25 1 - 4 24 - 100
    Clonazepam 0.25 1 - 4 19 - 60
    Diazepam 5 1 - 2 30 - 200 *
    Estazolam 1 .5 - .6 8 - 24
    Flurazepam 15 .5 - 1 40 - 250 *
    Halazepam 40 1 - 3 30 - 96 *
    Ketazolam 7.5 3.2 30 - 200
    Lorazepam 1 2 4 8 - 24
    Nitrazepam 2.5 .5 - 7 15 - 48
    Oxazepam 15 2 - 3 3 - 25
    Prazepam 10 2.5 - 6 30 - 100
    Quazepam 7.5 1.5 39 - 120 *
    Temazepam 10 Zestril 2.5 3 - 25
    Triazolam .25 1 - 2 1.5 - 5
    NOTE: Temazepam is short ie used for sleeping pills
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    Xanax is not an antidepressant, it is classified as anti-anxiety drug (anxiolytic).
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    Thanks for the advice cuz me and my dad have a blood test 2marrow to see whos taking alprozolam(xanax) and i kno i have been taking them and im not sure about my dad but when he said i had to take a blood test i just started guzziling green tea and water and i urinated alot and did it again and 5 hours just passed so i hope i dnt get caught cuz this will ruin everything for me... But ive been lowering my dosage because im REALLY trying to quit THANK YOU GUYS!!!!!!!!!!!!!!!!
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      I am pregnant and last wk i took a piece of a 3mg xr on wed. And thursday. I could go into labor at anytime... I took a in home urine test yesterday and it was negative. But the line was very light. When i go to deliver they take blood... Is it out of my system if i've been drinking' alot of water
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      They wont test the baby unless there is a drug abuse issue, no worries if you not a junky!
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          How could xanax be a benzo if its an antidepressant?  Its a benzo, that's it.  Xanax is a benzo with a very short half life.  It could be out of your system in 2-3 days with a half life of 6-12 hours.  It is actually bettter than other benzos in terms of half life.  For example, the half life of valium is 20-100 hours and if you take it regularly, can accumulate in your system and be detectable for up to 2 weeks or more.
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        Xanax is strictly a BENZO!!! It is only called an Anti-Depressant because some people suffer depression only because their anxiety disorder is so troublesome. Therefore when they take Xanax, it relieves the anxiety causing the depression to lift. Also, its half-life is NOT short at all. It's mean half life is 11.2 hours with a range of 6-26 hours.
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        Xanax is strictly a BENZO!!! It is only called an Anti-Depressant cause some people suffer depression only because there anxiety disorder is so troublesome. Therefore when they take Xanax, it relieves the anxiety causing the depression to lift. Also, it's half-life is NOT short at all. It's mean half life is 11.2 hours with a range of 6-26 hours.
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        I have known people to test positive for xanax for 2-4 weeks after taking last one, but they took a lot and were saturated. I have known people to take not very many and test positive for 1-2 weeks. I go to a methadone clinic and xanax is the big thing every drug tests dirty for up there so I have seen people take a lot and people take hardly any and the time limits they have tested dirty for the amount they have taken so I am not 100% or scientifically accurate but I do have a fairly good idea just from experience.
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        Ive always heard 3 days but was recently tested after last time use was about 25 days ago and i still came up dirty for it i weigh about 185   5'8 and was taking about 3 -6 a day for about 14 days... Hope this helps some people to not break probation like did
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        If i took 19 xanax how long would it take for them to be out of my blood and urine
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          I took like 4 xanax like about a month or so ago and im joining the military and i been Woking out hardcore and lost 17 lbs should i be good
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          Just to clarify, Xanax-the brand name, also known as Alprazolam-the generic name. Is indeed a Anxiolytic. It is not an Anti-depressant. It is sometimes used in conjunction with anti-depressants due to the high number of people that have anxiety with their depression. The time that it will remain in the system really depends on how much and how long you have taken it. If there is any serious question about how long it is in your system, maybe you should re-evaluate your use of the medication.

          When posting these comments please be careful about the information that you give, because some people will believe anything that they read. This can be very important because one should have the proper education before replying in regard to medication, dose, use and side-effect.

          B. H. Wells, Pharmacist PhD
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          Up to 30 days if you take it everyday.
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          A rough guide to how long something stays in your system is to multiply the half-life by 7. Only a few substances will vary according to the amount or length of time you use, and the ones that do are typically ones that are stored in fatty tissue (like marijuana). No amount of water or green tea or hot showers or exercise whatever will lessen the amount of time it stays in your system.
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          XANAX will stay in your blood for up to 52 hours.IT will stay in your urine for 20 to 30days if you only take it once or twice,But if you have been on Xanax for years same with the blood 52 hours
          but it takes much much longer to get out of your urine.If you took it for 3 or 4 years i could stay in your urine for over 90 days.IT gos into your fat cells you saturate your body with it.I was doing XANAX for over 5 years then i broke my leg.I did not take any xanax but i stayed in my urine for 3 months. I was 250 lbs and 6 foot tall i also was bed ridden.If you must get it out faster drink alot of water and also if your still young go running sweat it out of your body.Or better yet go into a sweat room at the gym or spa.
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            Im was using 6 x 2mg a night to go to sleep it was not working any more i quit in 1day . So lets see the site effects now
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            5 hours
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