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From Wikipedia, the free encyclopedia

Cefadroxil
Clinical data
Trade namesDuricef
AHFS/Drugs.comMonograph
MedlinePlusa682730
Routes of
administration
Oral
ATC code
Legal status
Legal status
  • In general: ℞ (Prescription only)
Pharmacokinetic data
Protein bindingplasma protein
Metabolismunknown
Elimination half-life1.5 hours
Identifiers
  • (6R,7R)-7-{[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]amino}-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
CAS Number
PubChem CID
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.051.397 Edit this at Wikidata
Chemical and physical data
FormulaC16H17N3O5S
Molar mass363.39 g·mol−1
3D model (JSmol)
  • O=C2N1/C(=C(\CS[C@@H]1[C@@H]2NC(=O)[C@@H](c3ccc(O)cc3)N)C)C(=O)O.O
  • InChI=1S/C16H17N3O5S.H2O/c1-7-6-25-15-11(14(22)19(15)12(7)16(23)24)18-13(21)10(17)8-2-4-9(20)5-3-8;/h2-5,10-11,15,20H,6,17H2,1H3,(H,18,21)(H,23,24);1H2/t10-,11-,15-;/m1./s1 checkY
  • Key:NBFNMSULHIODTC-CYJZLJNKSA-N checkY
 ☒NcheckY (what is this?)  (verify)

Cefadroxil (formerly trademarked as Duricef) is a broad-spectrum antibiotic of the cephalosporin type, effective in Gram-positive and Gram-negative bacterial infections. It is a bactericidal antibiotic.

It was patented in 1967 and approved for medical use in 1978.[1]

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Transcription

Medical use

Cefadroxil is a first-generation cephalosporin antibacterial drug that is the para-hydroxy derivative of cephalexin, and is used similarly in the treatment of mild to moderate susceptible infections such as the bacterium Streptococcus pyogenes, causing the disease popularly called strep throat or streptococcal tonsillitis, urinary tract infection, reproductive tract infection, and skin infections.[citation needed]

Cefadroxil is used as an antibiotic prophylaxis before dental procedures, for patients allergic to penicillins.[citation needed]

Spectrum of bacterial resistance and susceptibility

Cefadroxil has a broad spectrum of activity and has been effective in treating bacteria responsible for causing tonsillitis, and infections of the skin and urinary tract. Cefadroxil covers similar organisms to Cephalexin given that it is a derivative drug. The following represents MIC susceptibility data for a few medically significant microorganisms.[2]

  • Escherichia coli: 8 μg/ml
  • Staphylococcus aureus: 1 – 2 μg/ml
  • Streptococcus pneumoniae: ≤1 – >16 μg/ml

Side effects

The most common side effects of cefadroxil are diarrhea (which, less commonly, may be bloody), nausea, upset stomach, and vomiting. Other side effects include[3] rashes, hives, and itching.

Pharmacokinetics

Cefadroxil is almost completely absorbed from the gastrointestinal tract. After doses of 500 mg and 1 g by mouth, peak plasma concentrations of about 16 and 30 micrograms/ml, respectively, are obtained after 1.5 to 2.0 hours. Although peak concentrations are similar to those of cefalexin, plasma concentrations are more sustained. Dosage with food does not appear to affect the absorption of cefadroxil. About 20% of cefadroxil is reported to be bound to plasma proteins. Its plasma half-life is about 1.5 hours and is prolonged in patients with renal impairment.[citation needed]

Cefadroxil is widely distributed to body tissues and fluids. It crosses the placenta and appears in breast milk. More than 90% of a dose of cefadroxil may be excreted unchanged in the urine within 24 hours by glomerular filtration and tubular secretion; peak urinary concentrations of 1.8 mg/ml have been reported after a dose of 500 mg. Cefadroxil is removed by haemodialysis.

Dosage

Cefadroxil is given by mouth, and doses are expressed in terms of the anhydrous substance; 1.04 g of cefadroxil monohydrate is equivalent to about 1 g of anhydrous cefadroxil.

Veterinary use

It can be used for treating infected wounds on animals. Usually in powder form mixed with water, it has a color and smell similar to Tang. Given orally to animals, the amount is dependent on their weight and severity of infection.

References

  1. ^ Fischer J, Ganellin CR (2006). Analogue-based Drug Discovery. John Wiley & Sons. p. 493. ISBN 9783527607495.
  2. ^ "Cefadroxil, Free Acid Susceptibility and Minimum Inhibitory Concentration (MIC) Data" (PDF).
  3. ^ "Cefadroxil side effects". Drugs.
This page was last edited on 12 March 2023, at 14:55
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