Polymast (hetacillin potassium)



by Boehringer Ingelheim

Is a broad­spectrum treatment for subclinical and clinical mastitis

  • Milk withhold just 72 hours after last treatment
  • PolyMast reduces antibiotic use when you switch from extended therapy
  • Effective against a wide range of common bacteria
  • Convenient once-per-day dosing
  • Federal law restricts this drug to use by or on the order of a licensed veterinarian.


Polymast Intrammamary Infusion for Lactating Dairy Cattle is an antibiotic mastitis treatment providing bactericidal activity against Gram-positive and Gram-negative bacteria. Provides control against the major mastitis causing pathogens – Streptococcus agalactiae, Streptococcus dysgalactiae, Staphylococcus aureus and Escherichia coli. Potent bactericidal action that does not rely on the cow’s immune system to kill bacteria.


Each 10 mL disposable syringe contains hetacillin potassium equivalent to 62.5 mg ampicillin activity

Dosage and Administration:

Consult your veterinarian

Safety Information:

Milk that has been taken from animals during treatment and for 72 hours (6 milkings) after the latest treatment must not be used for food. Treated animals must not be slaughtered for food until 10 days after the latest treatment.

Storage: Do not store above 25° C (77° F)

Shipping: Ships ambient express.

Restrictions: Not available in: NE, MD, FL.

Cartons containing 12x10mL syringes with 12 convenient single use alcohol pads.


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