Drug: Duricef

DURICEF (cefadroxil) 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-l-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•H20 and the molecular weight of 381.40. It has the following structural formula: DURICEF (cefadroxil) film-coated tablets, 1 g, contain the following inactive ingredients: microcrystalline cellulose, hydroxypropyl methylcellulose, magnesium stearate, polyethylene glycol, polysorbate 80, simethicone emulsion, and titanium dioxide. DURICEF (cefadroxil) for Oral Suspension contains the following inactive ingredients: FD&C Yellow No. 6, flavors (natural and artificial), polysorbate 80, sodium benzoate, sucrose, and xanthan gum. DURICEF (cefadroxil) capsules contain the following inactive ingredients: D&C Red No. 28, FD&C Blue No. 1, FD&C Red No. 40, gelatin, magnesium stearate, and titanium dioxide.

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Gastrointestinal Onset of pseudomembranous colitis symptoms may occur during or after antibiotic treatment (see WARNINGS). Dyspepsia, nausea and vomiting have been reported rarely. Diarrhea has also occurred. Hypersensitivity Allergies (in the form of rash, urticaria, angioedema, and pruritus) have been observed. These reactions usually subsided upon discontinuation of the drug. Anaphylaxis has also been reported. Other Other reactions have included hepatic dysfunction including cholestasis and elevations in serum transaminase, genital pruritus, genital moniliasis, vaginitis, moderate transient neutropenia, fever. Agranulocytosis, thrombocytopenia, idiosyncratic hepatic failure, erythema multiforme, Stevens-Johnson syndrome, serum sickness, and arthralgia have been rarely reported. In addition to the adverse reactions listed above which have been observed in patients treated with cefadroxil, the following adverse reactions and altered laboratory tests have been reported for cephalosporin-class antibiotics: Toxic epidermal necrolysis, abdominal pain, superinfection, renal dysfunction, toxic nephropathy, aplastic anemia, hemolytic anemia, hemorrhage, prolonged prothrombin time, positive Coombs' test, increased BUN, increased creatinine, elevated alkaline phosphatase, elevated aspartate aminotransferase (AST), elevated alanine aminotransferase (ALT), elevated bilirubin, elevated LDH, eosinophilia, pancytopenia, neutropenia. Several cephalosporins have been implicated in triggering seizures, particularly in patients with renal impairment, when the dosage was not reduced (see DOSAGE AND ADMINISTRATION and OVERDOSAGE). If seizures associated with drug therapy occur, the drug should be discontinued. Anticonvulsant therapy can be given if clinically indicated. Read the Duricef (cefadroxil) Side Effects Center for a complete guide to possible side effectsLearn More »

Source: http://www.rxlist.com

DURICEF (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. Adults Urinary Tract Infections: For uncomplicated lower urinary tract infections (i.e., cystitis) the usual dosage is 1 or 2 g per day in a single (q.d.) or divided doses (b.i.d.). For all other urinary tract infections the usual dosage is 2 g per day in divided doses (b.i.d.). Skin and Skin Structure Infections: For skin and skin structure infections the usual dosage is 1 g per day in single (q.d.) or divided doses (b.i.d.). Pharyngitis and Tonsillitis: Treatment of group A beta-hemolytic streptococcal pharyngitis and tonsillitis-1 g per day in single (q.d.) or divided doses (b.i.d.) for 10 days. Children For urinary tract infections, the recommended daily dosage for children is 30 mg/kg/day in divided doses every 12 hours. For pharyngitis, tonsillitis, and impetigo, the recommended daily dosage for children is 30 mg/kg/day in a single dose or in equally divided doses every 12 hours. For other skin and skin structure infections, the recommended daily dosage is 30 mg/kg/day in equally divided doses every 12 hours. In the treatment of beta-hemolytic streptococcal infections, a therapeutic dosage of DURICEF (cefadroxil) should be administered for at least 10 days. See chart for total daily dosage for children. DAILY DOSAGE OF DURICEF® SUSPENSION Child's Weight     lbs kg 260 mg/5 mL 500 mg/5 mL 10 4.5 ½ tsp   20 9.1 1 tsp   30 13.6 1½ tsp   40 18.2 2 tsp l tsp 50 22.7 2½ tsp 1¼ tsp 60 27.3 3 tsp 1½ tsp 70 & above 31.8+ - 2 tsp Renal Impairment In patients with renal impairment, the dosage of cefadroxil monohydrate should be adjusted according to creatinine clearance rates to prevent drug accumulation. The following schedule is suggested. In adults, the initial dose is 1000 mg of DURICEF (cefadroxil) and the maintenance dose (based on the creatinine clearance rate [mL/min/1.73 M2]) is 500 mg at the time intervals listed below. Creatinine Clearances Dosage Interval 0-l0 mL/min 36 hours 10-25 mL/min 24 hours 25-50 mL/min 12 hours Patients with creatinine clearance rates over 50 mL/min may be treated as if they were patients having normal renal function. Reconstitution Directions for Oral Suspension Bottle Size Reconstitution Directions l00 mL Suspend in a total of 67 mL water.
Method: Tap bottle lightly to loosen powder. Add 67 mL of water in two portions. Shake well after each addition. 75 mL Suspend in a total of 51 mL water.
Method: Tap bottle lightly to loosen powder. Add 51 mL of water in two portions. Shake well after each addition. 50 mL Suspend in a total of 34 mL water.
Method: Tap bottle lightly to loosen powder.   Add 34 mL of water in two portions.
Shake well after each addition. After reconstitution, store in refrigerator. Shake well before using. Keep container tightly closed. Discard unused portion after 14 days.

Source: http://www.rxlist.com

Drug/Laboratory Test Interactions Positive direct Coombs' tests have been reported during treatment with the cephalosporin antibiotics. In hematologic studies or in transfusion cross-matching procedures when antiglobulin tests are performed on the minor side or in Coombs' testing of newborns whose mothers have received cephalosporin antibiotics before parturition, it should be recognized that a positive Coombs' test may be due to the drug. Read the Duricef Drug Interactions Center for a complete guide to possible interactions Learn More »

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DURICEF (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 E. coli; P. mirabilis, and Klebsiella species. Skin and skin structure infections caused by staphylococci and/or streptococci. Pharyngitis and/or tonsillitis caused by Streptococcus pyogenes (Group A beta-hemolytic streptococci). Note: Only penicillin by the intramuscular route of administration has been shown to be effective in the prophylaxis of rheumatic fever. DURICEF (cefadroxil) is generally effective in the eradication of streptococci from the oropharynx. However, data establishing the efficacy of DURICEF (cefadroxil) for the prophylaxis of subsequent rheumatic fever are not available. Note: Culture and susceptibility tests should be initiated prior to and during therapy. Renal function studies should be performed when indicated. To reduce the development of drug-resistant bacteria and maintain the effectiveness of DURICEF (cefadroxil) and other antibacterial drugs, DURICEF (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 epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.

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DURICEF (cefadroxil) is contraindicated in patients with known allergy to the cephalosporin group of antibiotics. Last reviewed on RxList: 3/18/2008
This monograph has been modified to include the generic and brand name in many instances.

Source: http://www.rxlist.com

A study of children under six years of age suggested that ingestion of less than 250 mg/kg of cephalosporins is not associated with significant outcomes. No action is required other than general support and observation. For amounts greater than 250 mg/kg, induce gastric emptying. In five anuric patients, it was demonstrated that an average of 63% of a 1 g oral dose is extracted from the body during a 6-8 hour hemodialysis session.

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DURICEF® (cefadroxil monohydrate, USP) 500 mg Capsules: opaque, maroon and white hard gelatin capsules, imprinted with "PPP" and "784" on one end and with "DURICEF (cefadroxil) " and "500 mg" on the other end. Capsules are supplied as follows: N 0430-0780-19...................Bottle of 50 Store at controlled room temperature 15° - 30° C (59° - 86° F). DURICEF® (cefadroxil) 1 gram Tablets: white to off white, top bisected, oval shaped, imprinted with "PPP" on one side of the bisect and "785" on the other side of the bisect. Tablets are supplied as follows: N 0430-0781-19....................Bottle of 50 Store at controlled room temperature 15° - 30° C (59° - 86° F). DURICEF® (cefadroxil) for Oral Suspension is orange-pineapple flavored, and is supplied as follows: 250mg/5mL................................N 0430-2782-15          50 mL Bottle 500 mg/5 mL N 0430-2782-17
N 0430-2783-16
N 0430-2783-17 100 mL Bottle
75 mL Bottle
100 mL Bottle Prior to reconstitution: Store at controlled room temperature 15° - 30° C (59° - 86° F). Manufactured by Bristol-Myers Squibb Co. Princeton, NJ 08543. For Warner Chilcott Company, Inc. Fajardo, PR 00738. Marketed by Warner Chilcott (US), Inc. Rockaway, NJ 07866. Revised April 2007. FDA Rev date: 6/5/2007 Last reviewed on RxList: 3/18/2008
This monograph has been modified to include the generic and brand name in many instances.

Source: http://www.rxlist.com

General DURICEF (cefadroxil) should be used with caution in the presence of markedly impaired renal function (creatinine clearance rate of less than 50 mL/min/1.73 M2). (See DOSAGE AND ADMINISTRATION.) In patients with known or suspected renal impairment, careful clinical observation and appropriate laboratory studies should be made prior to and during therapy. Prescribing DURICEF (cefadroxil) in the absence of a proven or strongly suspected bacterial infection or a prophylactic indication is unlikely to provide benefit to the patient and increases the risk of the development of drug-resistant bacteria. Prolonged use of DURICEF (cefadroxil) may result in the overgrowth of honsusceptible organisms. Careful observation of the patient is essential. If superinfection occurs during therapy, appropriate measures should be taken. DURICEF (cefadroxil) should be prescribed with caution in individuals with history of gastrointestinal disease particularly colitis. Carcinogenesis, Mutagenesis and Impairment of Fertility No long-term studies have been performed to determine carcinogenic potential. No genetic toxicity tests have been performed. Pregnancy: Pregnancy Category B Reproduction studies have been performed in mice and rats at doses up to 11 times the human dose and have revealed no evidence of impaired fertility or harm to the fetus due to cefadroxil monohydrate. There are, however, no adequate and well controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed. Labor and Delivery DURICEF (cefadroxil) has not been studied for use during labor and delivery. Treatment should only be given if clearly needed. Nursing Mothers Caution should be exercised when cefadroxil monohydrate is administered to a nursing mother. Pediatric Use (See DOSAGE AND ADMINISTRATION.) Geriatric Use Of approximately 650 patients who received cefadroxil for the treatment of urinary tract infections in three clinical trials, 28% were 60 years and older, while 16% were 70 years and older. Of approximately 1,000 patients who received cefadroxil for the treatment of skin and skin structure infection in 14 clinical trials, 12% were 60 years and older while 4% were 70 years and over. No overall differences in safety were observed between the elderly patients in these studies and younger patients. Clinical studies of cefadroxil for the. treatment of pharyngitis or tonsillitis did not include sufficient numbers of patients 65 years and older to determine whether they respond differently from younger patients. Other reported clinical experience with cefadroxil has not identified differences in responses between elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out. Cefadroxil is substantially excreted by the kidney, and dosage adjustment is indicated for patients with renal impairment (see DOSAGE AND ADMINISTRATION: Renal Impairment). Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function.Last reviewed on RxList: 3/18/2008
This monograph has been modified to include the generic and brand name in many instances.

Source: http://www.rxlist.com

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