Noromycin 300 LA – Long‑Acting Oxytetracycline Injection for Livestock

What Is Noromycin 300 LA?

Noromycin 300 LA is a sterile, ready‑to‑use injectable solution containing oxytetracycline dihydrate equivalent to 300 mg/mL oxytetracycline base. Manufactured by Norbrook Laboratories, it is FDA‑approved under NADA #141‑143. Noromycin is a broad‑spectrum antibiotic widely used in veterinary medicine for treating bacterial infections in cattle and swine.

How Noromycin Works

• Oxytetracycline mechanism: Inhibits bacterial protein synthesis by binding to the 30S ribosomal subunit.
• Broad‑spectrum coverage: Effective against gram‑positive and gram‑negative bacteria.
• Long‑acting formulation: Provides sustained therapeutic levels with fewer injections.
• Flexible dosing: Single‑dose or multiple‑dose regimens depending on severity of infection.

Indications

Noromycin 300 LA is indicated for:

• Cattle: Pneumonia, shipping fever, foot rot, pinkeye, and other bacterial infections.
• Swine: Bacterial enteritis, pneumonia, and leptospirosis.
• Calves (including veal): Respiratory infections and systemic bacterial diseases.

Buy Noromycin 300 LA Injectable Solution, 500 Ml  is specially formulated to provide sustained antibiotic blood levels up to 4 days in cattle and pigs following a single treatment.

NOROMYCIN 300 LA Injectable Solution is a sterile, long-acting stable aqueous solution containing oxytetracycline dihydrate equivalent to 300 mg oxytetracycline base per mL.

Advantages

NOROMYCIN LA 300 Injectable Solution offers the advantage of combining broad spectrum effectiveness against both gram positive and gram-negative bacteria, with prolonged antibiotic blood levels up to 4 days duration following a single treatment.

Noromycin LA 300 Indications

NOROMYCIN™ LA 300 Injectable Solution is indicated in the treatment of all infections caused by oxytetracycline susceptible bacteria in cattle and pigs.

CATTLE: Bacterial pneumonia, Pasteurellosis (associated with shipping fever complex), Mastitis, Metritis, Calf Scours (bacterial enteritis), Foot Rot, Navel ill, Calf Diphtheria, Leptospirosis, Blackleg/Malignant Edema, Peritonitis, Joint ill.

SWINE: Erysipelas, Bacterial enteritis, Leptospirosis, Metritis, Mastitis, Bacterial pneumonia.

Noromycin LA 300 Dosage and Administration

For intramuscular or subcutaneous administration to cattle and intramuscular administration to pigs at a single dose rate of 1 mL per 15 kg of live bodyweight (20 mg oxytetracycline per kg bodyweight).

It is recommended that the maximum dose at any one site is 10 mL in cattle and 5 mL in pigs to minimize local tissue irritation at the injection site. Intramuscular injections should be made deep into the fleshy part of the muscle such as the neck. Subcutaneous injections should be administered in the neck region.

Following administration, temporary localised swelling may be observed at the site of injection for several days. This is due to the high concentration and long acting effect of the product.

NOROMYCIN LA 300 Injectable Solution should be warmed to body temperature prior to administration.

If clinical improvement is not observed after 48 hours, clinical re-evaluation may be required. In non-responsive cases, consideration may be given to the use of an alternative antibiotic.

Note

Treatment with Noromycin 300 LA only, in severe disease cases, may be insufficient.

Warnings

Intramuscular Administration

Treated animals must not be slaughtered for use in food for at least 21 days after the latest treatment with this drug. Do not use in lactating dairy cattle.

Subcutaneous Administration

Treated cattle must not be slaughtered for use in food for at least 42 days after the latest treatment with this drug. Do not use in lactating dairy cattle.

Note

To avoid the possibility of excessive trim at the site of injection, do not slaughter cattle for at least 42 days after the latest treatment with this drug.

Noromycin 300 LA Caution

Occasional hypersensitivity reactions (anaphylaxis) have been observed following the parenteral administration of oxytetracycline. If such side effects occur, discontinue use of the drug and administer epinephrine immediately. The safety of this product in pregnant animals has not been demonstrated.

Storage

Store between 15° and 25°C. Protect from light. Do not freeze.

Presentation

NOROMYCIN LA 300 Injectable Solution is available in multidose 100 mL, 250 mL and 500 mL vials.

Manufactured By

Norbrook Laboratories Limited, Newry, Northern Ireland

Where to Buy Noromycin 300 LA Online

Buy Noromycin 300 LA Online from us at very competitive prices. We are 100% legit and efficient supplier of performance supplements for equine sports. We offer the best market prices and offer a huge discount for bulk buyers. Packaging and shipping are very discreet and bypass all custom or law enforcement. Delivery through regular and express airmail within 2-3 business days from dispatch.

Noromycin 300 LA is a trusted long‑acting oxytetracycline antibiotic for cattle, calves, and swine. With its broad‑spectrum coverage, flexible dosing, and proven efficacy, it remains a cornerstone of livestock health management. Prime Vet Meds is committed to providing safe, authentic, and accessible Noromycin worldwide, ensuring veterinarians and farmers have reliable solutions for bacterial infections.