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How long penicillin stay in your system

A 30-year-old member asked:
Dr. James Gagne
Internal Medicine 48 years experience
About 24 hours : Penicillin is an antibiotic with a short half-life, about four hours. If you take 500 mg at noon, 250 mg is still there at 4 pm, 125 mg at 8 pm, 62 mg... Read More

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A 50-year-old female asked:
Dr. Ayman Omar
Specializes in Neurology
Yes: I'm assuming you are talking about the tablet not the powder form. If so, the tablets are scored so yes you can cut it in half. Half of it is gone fro... Read More
A 35-year-old male asked:
Dr. James Ferguson
Pediatrics 46 years experience
None available: There is a drug called Penicillamine that is used to remove certain agents like lead and copper from the body.It does nor clense the body of all drugs... Read More
A 29-year-old member asked:
Dr. Michael Palumbo
Allergy and Immunology 23 years experience
5 hours: The half life of penicillin v is 30 minutes thus it is cleared in 5 hours.
A 34-year-old female asked:
Dr. Tony Ho
Dr. Tony Hoanswered
Infectious Disease 14 years experience
Context: Why are you on penicillin in the first place? In general, if you are on it for an infection, you want it to hang around as long as possible to kill th... Read More
A 40-year-old member asked:
Dr. Jason Beasley
Family Medicine 20 years experience
NO: Amoxicillin and penicillin are antibiotics used to treat infections. They will not clear the bloodstream of other drugs.
A member asked:
Dr. Daniel Ziegler
Emergency Medicine 30 years experience
If its Depo-Provera: You need to identify what "shot" you are talking about. A guess would be Depo-Provera [Depot medroxyprogesterone acetate (DMPA)] for birth control or ... Read More
A female asked:
Dr. Jose Prieto-hernandez
Infectious Disease 36 years experience
Healing slowly : Follow up with your physician and make sure you finish all the prescribed antibiotic since it seems to be working . He has the final say to see if you... Read More
A 23-year-old male asked:
Dr. Kyle Shank
Dentistry 13 years experience
Yes: The easy answer is yes. If your 30 min late on a dose it's not a huge deal. Just try to stick to the 6hr time frame as close as you can. If you're ... Read More
A 33-year-old female asked:
Dr. David Brouwer
Internal Medicine 30 years experience
Yes: Yes you can, however it would be important for you to discuss the appropriate antibiotic with your physician. Not all conditions that cause a murmur r... Read More

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

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