A member asked:

How long does it take for antibiotics to leave the body?

4 doctors weighed in across 3 answers
Dr. Benjamin Lerner answered

Specializes in Vascular Surgery

Depends : On the antibiotic halflife -- some antibiotics are metabolized very quickly and some slowly. You can get an idea of the rate of metabolism based on how frequently you are supposed to take them (ie daily antibiotics last longer than those taken 4x per day).

Answered 10/27/2018

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Dr. Michael Ein answered

Specializes in Infectious Disease

Depends on half life: 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.

Answered 8/21/2017

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Dr. Michael Ein answered

Specializes in Infectious Disease

Depends on half life: 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.

Answered 12/5/2018

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