Drug profile

The FDA adverse-event record for Loratidine

155 FDA reports name Loratidine, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#616 of 2,679
by report volume (all drugs)
155
adverse-event reports
5.2%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Loratidine ranks #614 of 2679 by total reports (155) and #786 of 1130 by death-coded share (5.2%). 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)
#614
This drug, reports of 2679
#786
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. Loratidine has 155 reports now versus 155 in that prior snapshot: 0 the same number of (0.0%).

Report change
+0
Death-coded reports
+0
Death-coded share
−0.0 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 Loratidine changes

Signature read: 155 reports place Loratidine in the upper third of FDA AER volume (#616 of 2,679).

Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
155
Total Reports
8
Deaths Reported
5.2%
Death-coded share of reports

Active Ingredients

Loratidine

Administration Routes

OralUnknown

Species Affected

Dog 142
Human 7
Cat 4
Unknown 1
Monkey 1

Most Affected Breeds

Retriever - Labrador 24
Unknown 9
Shih Tzu 7
Retriever - Golden 7
Crossbred Canine/dog 5
Terrier - Yorkshire 5
Bulldog 5
Terrier - Bull - American Pit 5
Domestic Shorthair 4
Maltese 4

Most Reported Reactions

Emesis 26
Lethargy (see also Central nervous system depression in 'Neurological') 19
Lack of efficacy - NOS 19
Vomiting 15
Diarrhoea 12
Other abnormal test result NOS 10
INEFFECTIVE, ATOPY CONTROL 10
Behavioural disorder NOS 8
Seizure NOS 7
Anorexia 6
Lack of efficacy (ectoparasite) - flea 6
Pruritus 6

Outcome Breakdown

Ongoing
59 (38.3%)
Recovered/Normal
49 (31.8%)
Outcome Unknown
27 (17.5%)
Recovered with Sequela
11 (7.1%)
Euthanized
5 (3.2%)
Died
3 (1.9%)

Loratidine: low 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.

High-volume nationwide drug peers

Two openFDA-derived peer sets for Loratidine, 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 Loratidine (#616 of 2,679 by report volume); death-coded 5.2%. PlainBreed drug row · report volume stamp 155 · 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 →