Drug profile

The FDA adverse-event record for Procaine Penicillin

49 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Procaine Penicillin. See the species affected, top reactions, and outcomes below.

49
adverse-event reports
22.4%
death-coded share
Dog
most-reported species
10
Death - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
49
Total Reports
11
Deaths Reported
22.4%
Death Rate

Active Ingredients

Procaine Penicillin

Administration Routes

IntramuscularSubcutaneousUnknownIntravenous

Species Affected

Dog 18
Horse 13
Pig 5
Cat 4
Cattle 3
Rabbit 3
Sheep 2
Alpaca 1

Most Affected Breeds

Quarter Horse 5
Thoroughbred 4
Unknown 4
Horse (unknown) 4
Holstein-Friesian also known as Holstein 3
Terrier - Yorkshire 3
Pig (unknown) 2
Yorkshire (Pig) also known as American Yorkshire 2
Domestic Shorthair 2
Bulldog - French 2

Most Reported Reactions

Death 10
Injection site pain 10
Behavioural disorder NOS 8
Anaphylaxis 7
Hyperactivity 6
Vocalisation 5
Injection site abscess 4
Injection site reaction NOS 4
Ataxia 4
Nasal discharge 4
Overdose 4
Apnoea 3

Outcome Breakdown

Recovered/Normal
24 (46.2%)
Outcome Unknown
13 (25.0%)
Died
11 (21.2%)
Ongoing
4 (7.7%)

Procaine Penicillin Adverse Event Insights

49 reports name Procaine Penicillin; 11 recorded a death outcome (22.4% of reported events, not a population-level mortality rate). Active ingredient: Procaine Penicillin. Administration routes: Intramuscular, Subcutaneous, Unknown, Intravenous.

By species: Dog (18 reports), Horse (13 reports), Pig (5 reports). By breed: Quarter Horse (5), Thoroughbred (4), Unknown (4).

Leading clinical signs: Death (10), Injection site pain (10), Behavioural disorder NOS (8), Anaphylaxis (7). Outcome, 52 coded reports: Recovered/Normal leads at 46.2%.

Read these counts as reporting volume, not risk: per our methodology, a widely-prescribed drug will rack up more raw FDA reports in a given year than a rarely-used one at an identical true rate, so we recommend comparing within similar-exposure products rather than across the full 2025 catalog.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.