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Aqueous Suspension/Injectable Antibiotic

Category: Anti-Microbial

Species: Cattle

Active Ingredients: penicillin G benzathine and penicillin G procaine

What is Combi-Pen-48®?

Penicillin G is an antibiotic which shows a marked bactericidal effect against certain organisms during their growth phase. It is relatively specific in its action against gram-positive bacteria.  Combi-Pen-48® provides longer detectable blood levels than penicillin G procaine alone.


This product is indicated for the treatment of the following bacterial infections in beef cattle due to penicillin-susceptible microorganisms that are susceptible to the serum levels common to this particular dosage form, such as:

  • Bacterial Pneumonia
    (shipping fever complex) (Streptococcus spp., Actinomyces pyogenes, Staphylococcus aureus)
  • Upper Respiratory Infections
    such as rhinitis or pharyngitis (Actinomyces pyogenes)
  • Blackleg
    (Clostridium chauvoei)


  • Fast acting
     Noticeable improvement within 24 to 48 hours
  • Long lasting
    Extended period of activity
  • Three convenient bottle sizes
    100mL, 250mL, 500mL
  • Safe
    Approved by FDA

Withdrawal Period

Meat and Offal30 days
Beef cattle should be withheld from slaughter for food use for 30 days following the last treatment. Treatment in beef cattle must be limited to two (2) doses, by subcutaneous injection only. Do not inject intramuscularly.
A withdrawal period has not been established for this product in pre-ruminating calves.
Do not use in calves to be processed for veal.

Pack Size

List No.Pack SizeCase Size
1COM301100 mL12
1COM302250 mL12
1COM303500 mL12