Drug profile

The FDA adverse-event record for Tacrolimus

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

210
adverse-event reports
11.4%
death-coded share
Dog
most-reported species
33
Vomiting - 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.
210
Total Reports
24
Deaths Reported
11.4%
Death Rate

Active Ingredients

Tacrolimus

Administration Routes

UnknownOphthalmicTopicalIntraocularOtherOralAuricular (Otic)

Species Affected

Dog 208
Unknown 1
Human 1

Most Affected Breeds

Shih Tzu 25
Shepherd Dog - German 17
Pug 14
Chihuahua 12
Dog (unknown) 10
Retriever - Labrador 9
Terrier - Yorkshire 8
Maltese 7
Bulldog 6
Terrier - West Highland White 6

Most Reported Reactions

Vomiting 33
Diarrhoea 23
Lethargy (see also Central nervous system depression in 'Neurological') 18
Weight loss 18
Lack of efficacy - NOS 18
Death by euthanasia 16
Lethargy (see also Central nervous system depression in Neurological) 15
Polyuria 14
Corneal ulcer 14
Behavioural disorder NOS 13
Dry eye 12
Other abnormal test result NOS 11

Outcome Breakdown

Ongoing
62 (29.5%)
Recovered/Normal
61 (29.0%)
Outcome Unknown
57 (27.1%)
Euthanized
17 (8.1%)
Died
7 (3.3%)
Recovered with Sequela
6 (2.9%)

Tacrolimus Adverse Event Insights

210 reports name Tacrolimus; 24 recorded a death outcome (11.4% of reported events, not a population-level mortality rate). Active ingredient: Tacrolimus. Administration routes: Unknown, Ophthalmic, Topical, Intraocular.

By species: Dog (208 reports), Unknown (1 reports), Human (1 reports). By breed: Shih Tzu (25), Shepherd Dog - German (17), Pug (14).

Leading clinical signs: Vomiting (33), Diarrhoea (23), Lethargy (see also Central nervous system depression in 'Neurological') (18), Weight loss (18). Outcome, 210 coded reports: Ongoing leads at 29.5%.

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.