Combi-Pen-48 (Long-Lasting Penicillin) Injectable

Item #16329

$21.99 to $82.99

Combi-Pen-48 (Long-Lasting Penicillin) Injectable

  • Combi-Pen-48 (Long-Lasting Penicillin) Injectable Image 1
  • Combi-Pen-48 (Long-Lasting Penicillin) Injectable Image 2
  • Combi-Pen-48 (Long-Lasting Penicillin) Injectable Image 3
  • Combi-Pen-48 (Long-Lasting Penicillin) Injectable Image 4
  • Combi-Pen-48 (Long-Lasting Penicillin) Injectable Image 5
  • Combi-Pen-48 (Long-Lasting Penicillin) Injectable Image 6
  • Image 0
  • Image 1
  • Image 2
  • Image 3
  • Image 4
  • Image 5

Combi-Pen-48 Contains 150,000 units Penicillin G Benzathine and 150,000 units of Penicillin G Procaine per mL. Use in beef cattle only! Read More

This product is currently unavailable for purchase.

Featured Advice from Our Experts


What is VFD & Why Can't I Find My Antibiotics?

If you are confused about the new law that will go into effect in January and/or how VFD will affect you and your animals, we have tried to help with a brief overview here -


Combi-Pen-48 (Penicillin)

(Formerly Twin-Pen. Contains 150,000 units Penicillin G Benzathine and 150,000 units of Penicillin G Procaine per mL.

Administer 2 mL SQ per 150 lb body weight, then repeat in 48 hrs. 30-day slaughter withdrawal in beef cattle used for food. Treatment must be limited to 2 doses. Do not inject IM. SQ administration only. Do not use on calves to be processed for veal or on horses intended for food. Combi-Pen-48 is used for treatment of bacterial infections in beef cattle due to penicillin susceptible microorganisms.

This FDA approved, long-lasting penicillin works fast with noticeable results within 4 to 48 hours.

Combi-Pen-48 Uses:

  • bacterial pneumonia
  • upper respiratory infections
  • blackleg

Restricted drug under California Law - Use In Beef Cattle Only!

View manufacturer and/or label


  • Ingredient: Penicillin G Benzathine,Penicillin G Procaine,Penicillin G Benzathine (300,000 units/mL),Penicillin G Procaine (300,000 units/mL)
  • Form: Injectable
  • Size: 100 mL,250 mL,500 mL

Reviews (2)

Write A Review

  1. 5.0 out of 5 stars

    "excellent "

    This long-lasting penicillin has literally been a lifesaver. It is my go-to antibiotic. Thankfully I don't have to use it often. I always keep a fresh bottle on hand, because when you need it, you need it now and it is cheap insurance.

  2. 5.0 out of 5 stars

    "great for needle-shy horses and young horses"

    works great, dose once every 48, subdermal near withers, GREAT if you have an untrained, younger horse or a needle-shy horse. go the FULL 10 days (5 doses) and alternate injection site, of course.

You May Also Like

Top of Page