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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 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