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Derapen SQ/LA (Canada)

This page contains information on Derapen SQ/LA for veterinary use.
The information provided typically includes the following:
  • Derapen SQ/LA Indications
  • Warnings and cautions for Derapen SQ/LA
  • Direction and dosage information for Derapen SQ/LA

Derapen SQ/LA

This treatment applies to the following species:
Manufacturer: Zoetis

Injectable Suspension


Veterinary Use Only

DIN 02231672

A long acting antibiotic.


DERAPEN SQ/LA is specifically formulated to provide sustained antibacterial activity in cattle and pigs following a single administration.

DERAPEN SQ/LA is a sterile, long acting stable suspension for parenteral administration containing Procaine Penicillin Ph. Eur. equivalent to 300 mg Procaine Penicillin G per mL.


DERAPEN SQ/LA offers the advantage of combining antibacterial effectiveness, with prolonged antibiotic blood levels following a single treatment, thereby reducing the number of injections required in a course of penicillin therapy.

Derapen SQ/LA Indications

DERAPEN SQ/LA is indicated for use in cattle and pigs for the treatment of the following infections caused by bacteria susceptible to penicillin:

CATTLE: Bacterial pneumonia; calf diphtheria; footrot; metritis; wound infections.

SWINE: Bacterial pneumonia; erysipelas; wound infections.

Dosage and Administration

CATTLE: DERAPEN SQ/LA may be administered by either the subcutaneous or intramuscular route of administration to non-lactating cattle. Do not exceed 15 mL per injection site.

SWINE: DERAPEN SQ/LA may be administered by intramuscular route only. Do not exceed 10 mL per injection site.

The recommended dose rate is 20 mg procaine penicillin per kg body weight, equivalent to 1 mL per 15 kg bodyweight. If necessary, a second dose may be administered after 72 hours.

Note: If animals do not respond within 48 hours of administration of the first dose, consult a veterinarian. An alternative antibacterial therapy should be considered.

Shake well before using.

Derapen SQ/LA Caution

Contra-indicated in known cases of hypersensitivity to penicillin.

In case of anaphylactic reaction (acute respiratory distress, mouth breathing, recumbency), administer epinephrine immediately to prevent death.

In pigs, the administration of this product may occasionally cause a fever, vomiting, shivering, listlessness, incoordination and possibly, death. In pregnant sows and gilts, it may result in abortions.


Do not administer to lactating dairy cattle.

Subcutaneous Administration:

Treated cattle must not be slaughtered for use in food for at least 14 days after the latest treatment with this drug.

Intramuscular Administration:

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

Treated pigs must not be slaughtered for use in food for at least 10 days after the latest treatment with this drug.


Store between 15 - 30°C. Do not freeze.


DERAPEN SQ/LA is available in multi-dose vials of 100 mL, 250 mL and 500 mL.

Pfizer Animal Health, Pfizer Canada Inc., Kirkland QC H9J 2M5

*Registered trademark of Wyeth LLC, Pfizer Canada Inc., Licensee

© Pfizer Canada Inc., 2010



100 mL


250 mL


500 mL


NAC No.: 11983652

Order Desk:   800-663-8888
Technical Services Canada:   800-461-0917
Technical Services USA:   800-366-5288
Every effort has been made to ensure the accuracy of the Derapen SQ/LA information published above. However, it remains the responsibility of the readers to familiarize themselves with the product information contained on the Canadian product label or package insert.

Copyright © 2018 North American Compendiums. Updated: 2018-05-30