Dry-Clox

Generic name: cloxacillin benzathine liquid
Dosage form: FOR ANIMAL USE ONLY

Approved by FDA under NADA # 055-058

Caution:

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

Description:

Dry-Clox (cloxacillin benzathine) is a product which provides bactericidal activity against gram-positive bacteria in the dry cow. The active agent, cloxacillin benzathine, is a sparingly soluble salt of the semisynthetic penicillin, cloxacillin. Cloxacillin is a derivative of 6-aminopenicillanic acid, and therefore is chemically related to other penicillins. It has, however, the antibacterial properties described below, which distinguish it from certain other penicillins.

Each 10 mL disposable syringe contains cloxacillin benzathine equivalent to 500 mg of cloxacillin activity in a stable peanut oil gel. This product was manufactured by a non-sterilizing process.

Storage:

Do not store above 25°C (77°F). Do not freeze.

Action:

In the non-lactating mammary gland, Dry-Clox provides bactericidal levels of the active antibiotic, cloxacillin, for a prolonged period of time. This prolonged activity is due to the low solubility of the cloxacillin benzathine and to the slow-release oil-gel base. This prolonged contact between the antibiotic and the pathogenic organism enhances the probability of a bacteriological cure.

Cloxacillin is not destroyed by the enzyme, penicillinase, and therefore, is active against penicillin-resistant strains of Staphylococcus aureus. It is also active against non-penicillinase-producing Staphylococcus aureus as well as Streptococcus agalactiae.

The class disc, Methicillin 5 mcg, should be used to estimate the in vitro susceptibility of bacteria to cloxacillin.

Indications:

For the treatment of mastitis in dairy cows during the dry period.

Dry-Clox has been shown by extensive clinical studies to be efficacious in the treatment of mastitis in dry cows, when caused by Streptococcus agalactiae and Staphylococcus aureus including penicillin-resistant strains.

Treatment of the dry cow with Dry-Clox is indicated in any cow known to harbor any of these organisms in the udder at drying off, or which has had repeated attacks of mastitis during the previous lactation, or is affected with mastitis at drying off, if caused by susceptible organisms.

Dosage for Dry Cows:

Infuse the contents of one syringe (10 mL) into each quarter following the last milking. See Directions for Use.

Directions for Use:

Dry-Clox is for use in dry cows ...