U.S. doctors online nowAsk doctors free
A 38-year-old member asked:

how long do antibiotics stay in your system?

2 doctor answers2 doctors weighed in
Dr. Ryan Phasouk
Family Medicine 18 years experience
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.
Dr. Creighton Wright
General Surgery 56 years experience
Drug half life/ and organ of metabolism, and excretion all play a role
Mar 23, 2014
Dr. Ryan Phasouk
Family Medicine 18 years experience
Provided original answer
Great information, Dr Wright!
Mar 23, 2014
Dr. Ryan Phasouk
Family Medicine 18 years experience
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.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
$30 per visit with
membership

Similar questions

A 21-year-old member asked:

If an anthrax event occurs, should people buy and store antibiotics?

2 doctor answers6 doctors weighed in
Dr. PHILLIP KIM
General Practice 15 years experience
Social issue : This becomes a social issue as storing antibiotics may interfere with those really in need for them. The shelf life of the drug becomes an issue as effectiveness of the drug can decline over time.
A 21-year-old member asked:

Should an elevated strep. Titer be treated with antibiotics?

2 doctor answers3 doctors weighed in
Dr. Mark Diamond
Pediatrics 46 years experience
No: This means your child had a previous strep infection and had an immune respone which is a good thing. The elevation does tell us when the infection was active.So rely on what symptoms your child has and ask advice of your doctor. If your child is sick and has a positive throat culture , yes antibiotics are needed.
A 21-year-old member asked:

Why do antibiotics not work well against pseudomonas aeruginosa?

2 doctor answers6 doctors weighed in
Dr. Booth Wainscoat
Infectious Disease 21 years experience
Various reasons: Pseudomonas is a very common bacteria which has developed many clever ways of resisting different antibiotics. It can destroy the antibiotics with chemicals, pump the antibiotics out of its cell or become 'invisible' to antibiotics by changing the appearance of the bacteria. Pseudomonas can adapt to antibiotics & change during the course of treatment. Serious infections often require an expert.
Canada
A 30-year-old female asked:

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

1 doctor answer1 doctor weighed in
Dr. Joseph Shen
Cardiac Electrophysiology 31 years experience
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.
A 45-year-old member asked:

How long do antibiotics stay in your system after doses?

1 doctor answer4 doctors weighed in
Dr. Michael Ein
Infectious Disease 48 years experience
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.

Related questions

A 32-year-old member asked:
1 doctor answer3 doctors weighed in
A 46-year-old member asked:
1 doctor answer1 doctor weighed in
A 48-year-old member asked:
1 doctor answer1 doctor weighed in
A 30-year-old member asked:
1 doctor answer2 doctors weighed in
A 18-year-old female asked:
1 doctor answer3 doctors weighed in

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
$30 per visit with
membership
Last updated Dec 15, 2019

People also asked

Related topics

Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
$30 per visit with
membership

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.