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Doctor insights on: How Long Do Antibiotics Stay In Your System

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How long do antibiotics stay in your system?

How long do antibiotics stay in your system?

Varies: The extent of time an antibiotic stays in your body would depend on which antibiotic you are taking as they will vary greatly. Ask a pharmacist for specifics. ...Read more

Dr. John Leander Po
1,117 Doctors shared insights

Antibiotic (Definition)

An antibiotic is a medicine that slows, stops, or kills germs. The germs are usually bacteria causing an infection in a person, so the person uses antibiotics to help his body get ...Read more


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How long do antibiotics stay in your system after doses?

How long do antibiotics stay in your system after doses?

5 half lives: Various antibiotics have different half lives. A half life is the time it takes to excrete 1/2 of the drug present in the body. A drug is considered to have been totally eliminated after 5 half lives. Therefore find out the half life of the antibiotic you are interested in and multiply it by 5 and you will have the time it takes for that drug to be eliminated. ...Read more

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How long do antibiotics for food poisoning stay in your system for?

How long do antibiotics for food poisoning stay in your system for?

Antibiotics: It depends on the half life of the antibiotic but I would think that they would be all clear in 72 hours. ...Read more

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How long should antibiotics stay in your system?

How long should antibiotics stay in your system?

Varies: The extent of time an antibiotic stays in your body would depend on which antibiotic you are taking as they will vary greatly. That is why timing and dosages of medications can vary. Ask a pharmacist for specific antibiotic questions you may have. ...Read more

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How long does an antibiotic stay in your system for?

How long does an antibiotic stay in your system for?

Depends.: Half-life of penicillin is a couple of hours; that of Azithromycin - several days. Other meds are in between. ...Read more

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How long does the antibiotic tacozin stay in your system. After a week of IV treatment? Thanks!

How long does the antibiotic tacozin stay in your system. After a week of IV treatment? Thanks!

Hmmm: Following single or multiple doses of piperacillin / tazobactam to healthy subjects, the plasma half-life of piperacillin and tazobactam ranged from 0.7 to 1.2 hours and was unaffected by dose or duration of infusion. The elimination half-lives of both piperacillin and tazobactam are increased with decreasing renal clearance. ...Read more

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How long does the antibiotic "metronidazole" stay in your system?

How long does the antibiotic "metronidazole" stay in your system?

About 2 days: The half life of Metronidazole is 8 hours. It takes about 5 half lives for a substance to be almost entirely out of your body, so that's 40 hours for metronidazole. ...Read more

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How long does it take for antibiotics like clarithromycin and amoxicillin stay in your system for?

How long does it take for antibiotics like clarithromycin and amoxicillin stay in your system for?

Just a few days: Antibiotics typically need to be used for 7=14 days to allow your body defenses to overcome an infection. They will typically stay in your system for a few days after completing treatment. Always important to take the entire course of treatment prescribed to assure complete eradication of the infection and to prevent a resistant infection from developing. ...Read more

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I recently finished an antibiotic about a week ago. How long does it stay in your system and how long can it affect my birth control?

I recently finished an antibiotic about a week ago. How long does it stay in your system and how long can it affect my birth control?

Elimination issue: That depends on the antibiotic. Usually we say that it takes 5 half lives of the antibiotic to get out of the body. More importantly, the effect on your normal gut bacteria; can be altered > 1 month depending on how broad spectrum the antibiotic. Flora helps ocp absorption. It would be safest to at least use a secondary mode of protection for a month after you complete your course of antibiotic. ...Read more

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HOW LONG DOES THE ANTIBIOTIC Z PACK STAY IN YOUR SYSTEM AFTER YOU TAKEN LAST ANTIOBIOTIC PILL?

HOW LONG DOES THE ANTIBIOTIC Z PACK STAY IN YOUR SYSTEM AFTER YOU TAKEN LAST ANTIOBIOTIC PILL?

Several days: The antibiotic azithromycin (also known as the z-pack) can last in your system for several days after finishing the course. This is because the drug has a long half-life. ...Read more

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I took diflucan (fluconazole) for 14 days. Thrush from antibiotics. How long does it stay in your system after last dosage?

I took diflucan (fluconazole) for 14 days. Thrush from antibiotics. How long does it stay in your system after last dosage?

~6 days: Half-life of fluconazole is 30hrs (range 20-50hrs). Check out http://www. Drugs. Com/pro/diflucan.html. Medications are considered to be out of body after 5 half-lives or in this case 150hrs or 6+days, assuming 30hrs. Of course, this is affected by your kidney function, in which it could stay in your body longer or be broken down more quickly in less time. Most important is resolving infection ...Read more

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How long does it take an antibiotic to leave your system?

Antibiotic Half-Life: The half-life of an antibiotic in the system varies greatly among antibiotic. Each antibiotic has it's own half-life which is the time it takes for half of the drug to leave the body. Normally, after 5 half-lives, the drug is considered totally gone. So if Ampicillin has a half life of 1 hour, after 5 hours it is completely gone from the body. Remember, each drug has it's own unique half life. ...Read more

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How long will it take for an antibiotic to leave my system?

How long will it take for an antibiotic to leave my system?

Depends on Abx: Some antibiotics like the penicillin group are effectively half gone within 4-8 hours & effectively all gone within a day or so from the last dose. Some, like azithromycin, attach to the fat cells of the body and may take weeks before it is completely gone. ...Read more

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How long does it take to get antibiotics out of your system?

How long does it take to get antibiotics out of your system?

Depends: Most antibiotics you take are out of your system within days. You can look at the number of times a day you have to take a pill and then try to realize that it must be washing away if you have to take it multiple times a day. Since there are so many different antibiotics I can't give a specific answer, but usually after 5 'half-lives' the antibiotic is totally gone. Twice a day? -> gone in 2 days ...Read more

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How long does it take for antibiotics to be out of your system?

How long does it take for antibiotics to be out of your system?

Can you provide: More information about the actual medication/ dosage so this can be explored for you. ...Read more

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How long does it take for antibiotics to get out of your system?

Depends of half-life: The half -life (length of time for half of the med dose to be metabolized is differernt for different meds. Many medications can be dosed once a day, other are generally given 2 or 3 times a day -based upon the half-life. Few antibiotics would be in your system more than 24hrs. ...Read more

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Just stopped antibiotic. How long until completely out of system?

Just stopped antibiotic. How long until completely out of system?

It depends...: ...on which antibiotic. A day or two for most, up to 2 weeks for long acting ones like azithromycin (Z-pak). ...Read more

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I took my last antibiotic pill today. How long does the medicine stay in the system and gone completely?

I took my last antibiotic pill today. How long does the medicine stay in the system and gone completely?

Couple days: Most medications clear within about four dose-lengths. So if you were taking it every 12 hours, by 48 hours it's gone. Shorter if it was dosed mor often, longer if it was dosed less often. ...Read more

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How long does it take for the antibiotic amoxicillin to get completely out of your system?

About 6 hours: Half life of Amoxicillin is only about an hour; in general, it takes about 4-5 half lives to clear a drug to undetectable levels, so 6 hours or so is adequate. ...Read more

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On antibiotics amoxicillin need to do complete regular bloodtests can I do them or how long do I wait for antibiotics to leave system if so?

On antibiotics amoxicillin need to do complete regular bloodtests can I do them or how long do I wait for antibiotics to leave system if so?

All depends on what: You are looking for. Antibiotics (against-life-things, i.e. poisons to micro-organisms which most humans tolerate well) do not alter most blood test values. However, values resulting from infection: blood cultures, white blood cell concentrations, or specific antibody concentrations related to infection (beyond current clinical tests) would change if reflect antibiotic relevant infection change. ...Read more

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Will my antibiotic alprim show up on a blood test? If so how long until it is out of my system?

No: Alprim is a sulfa antibiotic. I have done drug screening for twenty years and I am unaware of sulfa antibitotics having any cross reactivity with drug tests. Make sure you let the testes know you are or have recently taken the test. ...Read more

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How long does it take chlamydia to clear your system after taking a antibiotic?

ONE TO TWO WEEKS: After taking the full course of antibiotics like 2 gram of azithromycine it may take 1to2 weeks to clear the infection completely and one should refrain from vaginal or oral sex for two weeks after the treatment is completed. ...Read more

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How long after I stop taking antibiotics for mastitis will they stay in my system?

Except for...: ...Azithromycin (which stays around for weeks), practically all other antibiotics are gone in 24-48 hours. ...Read more

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How long will betamox be in my system. I'm on the pill and I want to be safe. My antibiotics will be for 5 days.

About 10 hours: After your last dose the amoxicillin, it will take approximately 10 hours for the drug to be out of your system. To be safe, when ever you are taking antibiotics you should utilize a second form of birth control. ...Read more

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I am not on birth control now but I start next month. I am getting on antibiotics. How long until it is out of my system for birth control to work?

Up to couple of days: If you finish your antibiotic treatment before you start taking birth control pills, will be no interference.
If you take antibiotics in the future, just count for not being protected until the following period and add other contraceptive methods. ...Read more

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What do you do to treat pseudomonas repeated UTI and weakened immune system due to long term antibiotic use?

What do you do to treat pseudomonas repeated UTI and weakened immune system due to long term antibiotic use?

Repeat UTI's: I would suggest you see a urologist to arrive at a diagnosis of what is causing your having repeat uti's. One of the causes is an anatomical problem of your urinary system. You will need a renal ultrasound and perhaps a xray of your kidneys, ureters and bladder. Have your urine cultured to make sure your doctor is giving you an effective antibiotic. How do you know your immune system is weak? ...Read more

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I had to take a single dose of 200mg Doxycycline mono. How long until all of the antibiotic is completely gone and out from my system?

I had to take a single dose of 200mg Doxycycline mono. How long until all of the antibiotic is completely gone and out from my system?

4 days: The exact half life depends somewhat on which salt it is. The halflife cycling of D. hyclate (one of the more common forms) would indicate than it usually would be undetectable in 3.5 to 4 days ...Read more

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High liver enzymes from two weeks prednisone and 17 days antibiotics. How long for that to leave system and liver become healthy again?

High liver enzymes from two weeks prednisone and 17 days antibiotics. How long for that to leave system and liver become healthy again?

I think you better l: I think you better have your doctor and you look closer to the elevation of the liver enzymes. Now why were you on prednisone and antibiotic? ...Read more

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Treated for chymadia how long does it take the antibiotics 2work and leave ur system I had to take 2 azithromycin 500mg took it and am not having sex?

Treated for chymadia how long does it take the antibiotics 2work and leave ur system I had to take 2 azithromycin 500mg took it and am not having sex?

Azithromycin...: ...is very long acting; it will be in your system for at least 10 days (which is one reason it works well against chlamydia even with only one dose). Probably you will be technically cured within 5 days, but best to avoid sex for a week. And of course don't resume sex with previous partner (s) until he/they have also been treated for chlamydia, even if they had negative test results. ...Read more