Drug profile

The FDA adverse-event record for Procaine Penicillin

53 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Procaine Penicillin. Species, reactions, and outcomes follow.

#1082 of 2,679
by report volume (all drugs)
53
adverse-event reports
20.8%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Procaine Penicillin ranks #1077 of 2679 by total reports (53) and #232 of 1130 by death-coded share (20.8%). National dual: Milbemycin Oxime + Spinosad is #1 of 2679 drugs by total adverse-event reports (149,624) at death-coded-share rank 965 of 1130 drugs with at least 50 reports (2.3%); separately, Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) is #1 highest death-coded share at 97.8% (report rank #821).

149,624
Milbemycin Oxime + Spinosad reports (#1)
97.8%
Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) death share (#1)
#1077
This drug, reports of 2679
#232
This drug, death share of 1130

Report volume reflects how common a breed or drug is and how often owners and vets file — not actual risk. Death-coded share ranks are limited to entries with enough reports to be meaningful. The two maps do not agree at #1.

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. Procaine Penicillin has 53 reports now versus 50 in that prior snapshot: 3 more (6.0%).

Report change
+3
Death-coded reports
+0
Death-coded share
−1.2 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to Procaine Penicillin changes

Signature read: Procaine Penicillin's 20.8% death-coded share is among the highest in the openFDA drug corpus.

Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
53
Total Reports
11
Deaths Reported
20.8%
Death-coded share of reports

Active Ingredients

Procaine Penicillin

Administration Routes

IntramuscularSubcutaneousUnknownIntravenous

Species Affected

Dog 20
Horse 13
Pig 6
Cat 4
Cattle 3
Rabbit 3
Sheep 2
Alpaca 1
Human 1

Most Affected Breeds

Unknown 5
Quarter Horse 5
Thoroughbred 4
Horse (unknown) 4
Pig (unknown) 3
Holstein-Friesian also known as Holstein 3
Retriever - Golden 3
Terrier - Yorkshire 3
Yorkshire (Pig) also known as American Yorkshire 2
Domestic Shorthair 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 (42.9%)
Outcome Unknown
17 (30.4%)
Died
11 (19.6%)
Ongoing
4 (7.1%)

Procaine Penicillin: high death-coded share in the FDA AER row

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.

Nationwide drugs with similar profiles

Two openFDA-derived peer sets for Procaine Penicillin, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

What to do with this drug

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

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

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Procaine Penicillin (#1082 of 2,679 by report volume); death-coded 20.8%. PlainBreed drug row · death-coded share stamp 20.8% · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →