Dariclox

Manufacturer: Intervet/Merck Animal Health

(sodium Cloxacillin)

Lactating Cow Formula

Intramammary Infusion

Dariclox Caution

Federal law restricts this drug to use by or on the order of a licensed veterinarian.

Description

Dariclox (sodium cloxacillin) is a stable, nonirritating suspension of sodium cloxacillin containing the equivalent of 200 mg of cloxacillin in saturated vegetable oils per disposable syringe. Dariclox is manufactured by a nonsterilizing process.

Cloxacillin is a semisynthetic penicillin derived from the penicillin nucleus, 6-amino-penicillanic acid. Sodium cloxacillin is the monohydrate sodium salt of 5-methyl-3-(o-chlorophenyl)-4-isoxazolyl penicillin.

Action

Sodium cloxacillin is bactericidal in action against susceptible organisms during the stage of active multiplication. It acts through the inhibition of biosynthesis of cell wall mucopeptide. It is active against most gram-positive organisms associated with mastitis. It is effective against Streptococcus agalactiae and nonpenicillinase-producing Staphylococcus aureus, and there is laboratory evidence that indicates cloxacillin is resistant to destruction by penicillinase-producing organisms. Milk cultures and antibiotic susceptibility testing is recommended when using this product.

Susceptibility Test

The Kirby-Bauer* procedure, utilizing antibiotic susceptibility disks, is a quantitative method that may be adapted to determining the sensitivity of bacteria in milk to Dariclox.

For testing the effectiveness of Dariclox in milk, follow the Kirby-Bauer procedure using the 1 mcg oxacillin susceptibility disk. Zone diameters for interpreting susceptibility are:

Resistant	Intermediate	Susceptible
≤ 10 mm	11-12 mm	≥ 13 mm

* Bauer AW, Kirby WMM, Sherris JC, et al: Antibiotic testing by a standardized single disk method, Am J Clin Path 45:493, 1966. Standardized Disk Susceptibility Test, Federal Register 37:20527-29, 1972.

Dariclox Indications

Dariclox is indicated in the treatment of bovine mastitis in lactating cows due to Streptococcus agalactiae and nonpenicillinase-producing Staphylococcus aureus.

Clinical experience indicates that antibiotic efficacy in the treatment of mastitis in lactating cows is directly related to the duration of infection. Therefore, treatment should be instituted as early as possible after detection.

Warnings

Milk taken from animals during treatment and for 48 hours (4 milkings) after the last treatment must not be used for food. Treated animals must not be slaughtered for food purposes within 10 days after the last treatment.

Precaution

Because it is a derivative of 6-amino-penicillanic acid, Dariclox has the potential for producing allergic reactions. Such reactions are rare; however, should they occur, the subject should be treated with the usual agents (antihistamines, pressor amines).

Dariclox Dosage And Administration

Milk out udder completely. Wash udder and teats thoroughly with warm water containing a suitable dairy antiseptic. Dry thoroughly. Clean and disinfect the teat with alcohol swabs provided in the carton. Remove the syringe tip cover and insert the tip of the syringe into the teat orifice. Express the suspension into the quarter with gentle and continuous pressure. Withdraw the syringe and grasp the end of the teat firmly. Massage the medication up into the milk cistern.

For optimum response the drug should be administered by intra-mammary infusion in each infected quarter as described above. Treatment should be repeated at 12-hour intervals for a total of 3 doses. The treated quarter should be milked out at the next routine milking.

Each carton contains 12 alcohol swabs to facilitate proper cleaning and disinfecting of the teat orifice.

How Supplied

Dariclox is supplied in cartons of 12 single-dose syringes with 12 alcohol swabs. Each 10-mL, disposable syringe contains sodium cloxacillin equivalent to 200 mg of cloxacillin.

Precaution

Administration of this product in any manner other than described under Dosage and Administration may result in drug residues.

Veterinary Use Only-not For Human Use

Keep Out Of Reach Of Children

Discard Empty Container-do Not Reuse

Do Not Store Above 24°c (75°f)

NADA #55-070, Approved by FDA

Manufactured by: G.C. Hanford Mfg. Co., Syracuse, NY 13201

Copyright ©2003, Schering-Plough Animal Health Corp., Union, NJ 07083. All rights reserved.

Made in the USA

10/03

F-27865500, B-27865500

INS15476 01, CTN15477 01

Nac No.

10472342