Drug profile

The FDA adverse-event record for Lorazepam

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

26
adverse-event reports
15.4%
death-coded share
Dog
most-reported species
5
Behavioural disorder NOS - 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.
26
Total Reports
4
Deaths Reported
15.4%
Death Rate

Active Ingredients

Lorazepam

Administration Routes

OralUnknownIntramuscular

Species Affected

Dog 17
Human 7
Cat 2

Most Affected Breeds

Unknown 7
Crossbred Canine/dog 3
Dog (other) 2
Domestic Shorthair 2
Terrier - Jack Russell 1
Lhasa Apso 1
Terrier (unspecified) 1
Chow Chow 1
Terrier - Yorkshire 1
Pinscher - Miniature 1

Most Reported Reactions

Behavioural disorder NOS 5
Vomiting 3
Not eating 3
Panting 3
Inappropriate urination 3
Weight loss 2
Shaking 2
Emesis 2
Feeling anxious 2
Abdominal pain 2
Other abnormal test result NOS 2
Death 2

Outcome Breakdown

Recovered/Normal
12 (44.4%)
Outcome Unknown
7 (25.9%)
Ongoing
4 (14.8%)
Died
2 (7.4%)
Euthanized
2 (7.4%)

Lorazepam Adverse Event Insights

26 reports name Lorazepam; 4 recorded a death outcome (15.4% of reported events, not a population-level mortality rate). Active ingredient: Lorazepam. Administration routes: Oral, Unknown, Intramuscular.

By species: Dog (17 reports), Human (7 reports), Cat (2 reports). By breed: Unknown (7), Crossbred Canine/dog (3), Dog (other) (2).

Leading clinical signs: Behavioural disorder NOS (5), Vomiting (3), Not eating (3), Panting (3). Outcome, 27 coded reports: Recovered/Normal leads at 44.4%.

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.