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Cefa Drops Rx, 50 mg x 50 ml |  | 
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Reg. $41.91 EACH
| | Product Details: | CEFA-DROPS® / CEFA-TABS®
Rx
Fort Dodge
CEFADROXIL
Veterinary Powder for Oral Suspension
NADA 140-684 and 119-688, Approved by FDA
CEFA-DROPS (cefadroxil) and CEFA-TABS (cefadroxil) contain a semi-synthetic cephalosporin antibiotic intended for oral administration. CEFA-DROPS has an orange-pineapple flavor.
CHEMISTRY
Cefadroxil is a member of a group of semi-synthetic derivatives of cephalosporin C, found among the metabolic products of the fungus Cephalosporium acremonium. The cephalosporins are structurally related to the penicillins in that both contain a 4-member beta-lactam ring. Cefadroxil is a 7-amino cephalosporanic acid substituted at the 7 position to form a molecule designated chemically as (6R, 7R)-7-[(R)-2-amino-2-(p-hydroxyphenyl) acetamido]-3-methyl-8-oxo-5-thia-1-azabicyclo [4.2.0] oct-2-ene-2-carboxylic acid monohydrate:
CLINICAL PHARMACOLOGY
Action
Cefadroxil, like other beta-lactam antibiotics, is a bactericidal agent that causes death of bacterial cells through a diversity of biological and biochemical effects on the cell wall. The spectrum of antibacterial activity includes many gram-negative organisms since cefadroxil, like other cephalosporins, has the ability to penetrate the outer envelope of gram-negative bacilli, thereby gaining access to cell wall target sites. Cefadroxil is generally not broken down by penicillinases such as those produced by penicillin-resistant staphylococci, although cephalosporinases have been identified that can inactivate the molecule.
Microbiology
| Organism |
No. of Isolates |
Minimum Inhibitory Concentration (mcg/mL) |
|
|
Range |
MIC90* |
| Streptococcus pyogenes |
(24) |
0.063-0.125 |
0.11 |
| Streptococcus agalactiae |
(27) |
0.25-1 |
0.92 |
| Streptococcus pneumoniae |
(29) |
0.5-2 |
1.2 |
| Staphylococcus aureus, penicillin sensitive |
(16) |
2-16 |
3.2 |
| , penicillin resistant |
(63) |
1-32 |
6.2 |
| Staphylococcus epidermidis |
(28) |
0.125-4 |
2.13 |
| Escherichia coli |
(59) |
4->125 |
16.0 |
| Proteus mirabilis |
(62) |
4->125 |
15.6 |
| Klebsiella pneumoniae |
(61) |
4-16 |
7.85 |
| Salmonella spp. |
(22) |
4-8 |
7.19 |
| Shigella spp. |
(12) |
2-8 |
6.98 |
| Pasteurella multocida |
(2) |
|
1.4 |
*Concentration at which 90% of the isolates are susceptible.
The susceptibility of organisms to cefadroxil should be determined using the cephalosporin class disc, 30 mcg. Specimens for susceptibility testing should be collected prior to the initiation of antibiotic therapy.
Pharmacokinetics
Cefadroxil is stable in gastric acid and only moderately bound to serum proteins (approximately 20%). Cefadroxil is well absorbed from the gastrointestinal tract even when administered with food. The drug is excreted largely unchanged by the kidney. In humans, high concentrations of cefadroxil activity are found in urine within three hours after oral dosage2. The concurrent administration of probenecid retards the elimination rate.
In dogs, oral administration of cefadroxil at a dosage of 10 mg/lb results in mean peak serum concentrations averaging 18.6 mcg/mL within 1 to 2 hours after treatment3. The serum half-life (T½) following oral administration is approximately 2 hours. Over 50% of an orally administered dose is excreted unchanged in the urine of dogs within 24 hours. Serum concentration time profiles in dogs following oral administration are illustrated graphically in Figure 1.
Figure 1: Cefadroxil Serum Concentration Curves in Dogs3
In cats, oral administration of cefadroxil at a dosage of 10 mg/lb results in mean peak serum concentrations of 17.4 mcg/mL within 1 to 2 hours after treatment. The serum half-life (T½) following oral administration to cats is 2½ to 3 hours. Serum concentration time profiles in cats following oral administration are illustrated graphically in Figure 2.
Figure 2: Cefadroxil Serum Concentration Curves in Cats
INDICATIONS
CEFA-DROPS (cefadroxil) and CEFA-TABS (cefadroxil) are indicated for the treatment of the following conditions:
Dogs: Genitourinary tract infections (cystitis) caused by susceptible strains of Escherichia coli, Proteus mirabilis and Staphylococcus aureus.
Skin and soft tissue infections including cellulitis, pyoderma, dermatitis, wound infections and abscesses caused by susceptible strains of Staphylococcus aureus.
Cats: Skin and soft tissue infections including abscesses, wound infections, cellulitis and dermatitis caused by susceptible strains of Pasteurella multocida, Staphylococcus aureus, Staphylococcus epidermidis and Streptococcus spp.
CONTRAINDICATIONS
CEFA-DROPS and CEFA-TABS should not be administered to dogs or cats with a known allergy to cephalosporins. In penicillin-allergic animals, CEFA-DROPS and CEFA-TABS should be used with caution.
WARNINGS
For use in dogs and cats only. Not to be used in animals which are raised for food production. Safety for use in pregnant female dogs and cats or in breeding males has not been determined (see ANIMAL TOXICOLOGY).
ANIMAL TOXICOLOGY
In subacute studies, dogs administered 100, 200 or 400 mg/kg/day for 13 weeks showed no consistent or distinct treatment-related histopathologic changes. In chronic toxicity studies, dogs receiving doses as high as 600 mg/kg/day for six months showed no discernible treatment-related effects, with the exception of emesis in dogs receiving a 400 mg/kg/day dose at one time. No distinct or consistent meaningful drug-related changes in the hematologic, coagulation or urinalysis test results or in histologic examination of tissues were observed when compared to controls.
No teratogenic or antifertility effects were seen in reproductive studies done in mice and rats receiving dosages as high as nine times the maximum recommended canine dosage.
In cats, oral administration of cefadroxil at a dosage of 240 mg/kg/day divided into two equal doses (ten times the recommended daily dosage) for 21 consecutive days produced no clinical chemistry, pathological or other signs of toxicity other than reduced food consumption, vomiting and diarrhea.
ADVERSE REACTIONS
Occasional nausea and vomiting have been reported following cefadroxil therapy. Administration with food appears to decrease nausea. Diarrhea and lethargy have been occasionally reported.
DOSAGE
Dogs: CEFA-DROPS and CEFA-TABS 1 gram, 50 mg, 100 mg and 200 mg should be administered orally at a dosage of 10 mg/lb of body weight twice daily. Dogs with skin or soft tissue infections should be treated for a minimum of three days. Genitourinary tract infections should be treated for a minimum of seven days with cefadroxil. Maximum duration of therapy should not exceed 30 days.
Cats: CEFA-DROPS and CEFA-TABS 50 mg and 100 mg should be administered orally at a dosage of 10 mg/lb of body weight once daily. Maximum duration of therapy should not exceed 21 days.
In both species, drug treatment should continue for at least 48 hours after the animal is afebrile or asymptomatic. If no response is observed after three days of treatment, therapy should be discontinued and the case should be re-evaluated.
TO PREPARE SUSPENSION
Tap bottle lightly to loosen powder. For 15 mL bottle, add 10.4 mL of water in two portions. For 50 mL bottle, add 34 mL of water in two portions. Shake well after each addition. After mixing, store in refrigerator. Shake well before use. Discard unused portion after 14 days.
Droppers supplied with CEFA-DROPS are calibrated in mL increments. When mixed as directed, each mL contains cefadroxil monohydrate equivalent to 50 mg cefadroxil.
CAUTION
The enclosed dose dropper in Cefa Drops contains natural rubber latex which may cause allergic reactions.
SUPPLY
CEFA-DROPS (cefadroxil) VETERINARY POWDER FOR ORAL SUSPENSION equivalent to:
NDC 0856-2365-20 - 750 mg cefadroxil per 15 mL dropper bottle
NDC 0856-2365-50 - 2500 mg cefadroxil per 50 mL dropper bottle
CEFA-TABS (cefadroxil) VETERINARY FILM-COATED tableTS:
NDC 0856-2350-80 - 50 mg tablets, bottles of 500
NDC 0856-2351-80 - 100 mg tablets, bottles of 500
NDC 0856-2352-70 - 200 mg tablets, bottles of 250
Store at controlled room temperature 15° to 30°C (59° to 86°F).
Prescription items are NON-RETURNABLE and NON-REFUNDABLE. | | Pet Medications>Prescription Pet Medications>Pet Prescription Medications A-C
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