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