Medication and Drugs
Antibiotics
Amoxicillin
Psychostimulants

How long does amoxicillin stay in your system?

111213

Answer

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08/27/2009

Amoxicillin, an analog of ampicillin, is a semisynthetic antibiotic that inhibits the biosynthesis of cell wall mucopeptide. It has a broad-spectrum bactericidal activity against most strains of aerobic gram-positive and gram-negative microorganisms [12].

Pharmacokinetics Details in DRUGDEX® Back to top

Absorption

Oral: time to peak concentration, 1 h to 2 h [12]

Distribution

Protein binding: approximately 20% [12]

Excretion

Renal: approximately 60% (mostly unchanged) [12]

Dialyzable: yes (hemodialysis) [12]

Elimination Half Life

61.3 min [12]

This data is from micromedex.

The last number (half-life) will tell you about how long the drug will be available in a non-compromised adult. So after about an hour, 500mg will be left, 2 hours 250mg left, 3 hours 125mg left, and so on. Usually about 4 half-lives will bring the drug down to levels that are non-therapeutic and therefore not significant.