Cefadroxil
Cefadroxil Prescribing Information
Cefadroxil is indicated for the treatment of patients with infection caused by susceptible strains of the designated organisms in the following diseases:
Urinary tract infections caused by
Skin and skin structure infections caused by staphylococci and/or streptococci.
Pharyngitis and/or tonsillitis caused by
Note:
Note:
To reduce the development of drug-resistant bacteria and maintain the effectiveness of cefadroxil and other antibacterial drugs, cefadroxil should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemology and susceptibility patterns may contribute to the empiric selection of therapy.
Cefadroxil is acid-stable and may be administered orally without regard to meals. Administration with food may be helpful in diminishing potential gastrointestinal complaints occasionally associated with oral cephalosporin therapy.
Cefadroxil is contraindicated in patients with known allergy to the cephalosporin group of antibiotics.
Onset of pseudomembranous colitis symptoms may occur during or after antibiotic treatment (see
Cefadroxil, USP is a semisynthetic cephalosporin antibiotic intended for oral administration. It is a white to yellowish-white crystalline powder. It is soluble in water and it is acid-stable. It is chemically designated as 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[amino(4-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-, monohydrate, [6R-[6α,7β(R*)]]-. It has the formula C16H17N3O5S · H2O and the molecular weight of 381.40. It has the following structural formula:
Cefadroxil capsules contain the following inactive ingredients: Lactose monohydrate, magnesium stearate, FD&C Blue No.1, D&C Red No.28, FD&C Red No. 40, titanium dioxide, gelatin, sodium lauryl sulphate, and edible black ink (black iron oxide).
Cefadroxil is rapidly absorbed after oral administration. Following single doses of 500 mg and 1000 mg, average peak serum concentrations were approximately 16 and 28 mcg/mL, respectively. Measurable levels were present 12 hours after administration. Over 90% of the drug is excreted unchanged in the urine within 24 hours. Peak urine concentrations are approximately 1800 mcg/mL during the period following a single 500 mg oral dose. Increases in dosage generally produce a proportionate increase in cefadroxil urinary concentration. The urine antibiotic concentration, following a 1 g dose, was maintained well above the MIC of susceptible urinary pathogens for 20 to 22 hours.