Drug profile

The FDA adverse-event record for Cobalamin

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

#1103 of 2,679
by report volume (all drugs)
51
adverse-event reports
23.5%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Cobalamin ranks #1098 of 2679 by total reports (51) and #190 of 1130 by death-coded share (23.5%). 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)
#1098
This drug, reports of 2679
#190
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. Cobalamin has 51 reports now versus 49 in that prior snapshot: 2 more (4.1%).

Report change
+2
Death-coded reports
+0
Death-coded share
−1.0 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 Cobalamin changes

Signature read: Cobalamin's 23.5% 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.
51
Total Reports
12
Deaths Reported
23.5%
Death-coded share of reports

Active Ingredients

Cobalamin

Administration Routes

UnknownOralParenteralSubcutaneousIntravenous

Species Affected

Dog 28
Cat 23

Most Affected Breeds

Domestic Shorthair 12
Retriever - Labrador 6
Domestic Longhair 4
Crossbred Canine/dog 4
Bulldog - English 3
Retriever - Nova Scotia Duck Tolling 2
Maine Coon 2
Terrier - Bull - American Pit 2
Retriever - Golden 2
Poodle - Miniature 1

Most Reported Reactions

Diarrhoea 11
Weight loss 9
Vomiting 8
Death by euthanasia 7
Decreased appetite 6
Anorexia 6
Death 5
Not eating 5
Lethargy (see also Central nervous system depression in Neurological) 5
Lethargy (see also Central nervous system depression in 'Neurological') 4
Behavioural disorder NOS 4
Elevated alanine aminotransferase (ALT) 4

Outcome Breakdown

Ongoing
19 (37.3%)
Outcome Unknown
12 (23.5%)
Recovered/Normal
7 (13.7%)
Euthanized
7 (13.7%)
Died
5 (9.8%)
Recovered with Sequela
1 (2.0%)

Cobalamin: 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 Cobalamin, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar death-coded share

Nearest other drugs by death-coded share (23.5% here), distinct from the volume row.

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 Cobalamin (#1103 of 2,679 by report volume); death-coded 23.5%. PlainBreed drug row · death-coded share stamp 23.5% · 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 →