() Norocillin® (penicillin G procaine injectable suspension) | Norbrook


(penicillin G procaine injectable suspension)   


An antibacterial agent with activity against a variety of mainly Gram-positive pathogenic organisms. It’s indicated for the treatment  of bacterial pneumonia (shipping fever) in cattle and sheep, as well as for the treatment of erysipelas (cellulitis) in swine and for the treatment of strangles in horses. 

Target Species: Cattle, Sheep, Swine and Horses

Product Attributes

  • Norocillin® Injection is administered as a daily intramuscular injection at 1 mL per 100 pounds of body weight

  • Each mL is designed to provide 300,000 units penicillin G as procaine

  • FDA approved

  • Available in 100 mL, 250 mL and 500 mL vials 

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



Observe label directions and withdrawal times. Do not use in calves to be processed for veal. Allergic or anaphylactic reactions, sometimes fatal, have been known to occur in animals hypersensitive to penicillin and procaine. Therefore, animals administered should be kept under close observation for at least one-half hour following injection. See product labeling for full product information. 

  • Active Ingredient(s)

    procaine penicillin 300,000 units/mL

  • Dosage Form

    Suspension for injection

  • Indications

    Norocillin® is indicated for treatment of bacterial pneumonia (shipping fever) caused by Pasteurella multocida in cattle and sheep, erysipelas caused by Erysipelothrix rhusiopathiae in swine, and strangles caused by Streptococcus equi in horses.

  • Dosage and Administration

    Norocillin® is administered by the intramuscular route. The product is ready for injection after warming the vial to room temperature and shaking to ensure a uniform suspension.

    The daily dose of penicillin is 3,000 units per pound of body weight (1 mL per 100 lbs body weight). Continue daily treatment until recovery is apparent and for at least one day after symptoms disappear, usually in two to three days.

    Treatment should not exceed four consecutive days.

    No more than 10 mL should be injected at any one site. Rotate injection sites for each succeeding treatment.

    Norocillin Residue Warning

  • Storage

    Norocillin should be stored between 2 to 8°C (36 – 46°F).

A Comprehensive Antibiotic Portfolio

Norbrook® now covers five classes of antibiotics.

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Please note: Product information presented on this website is intended only as a brief summary of Norbrook products for your convenience. Not all products or indications are licensed in every country and may be subject to further local variations. For specific product information you should always consult a healthcare professional from your region or visit the local government agency website for the most up to date information. Please see our terms and conditions for further information.