Drug profile

The FDA adverse-event record for Cyclosporin

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

53
adverse-event reports
13.2%
death-coded share
Dog
most-reported species
9
Diarrhoea - 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.
53
Total Reports
7
Deaths Reported
13.2%
Death Rate

Active Ingredients

Cyclosporin

Administration Routes

UnknownOralOphthalmicIntraocularAuricular (Otic)Topical

Species Affected

Dog 49
Cat 4

Most Affected Breeds

Shih Tzu 7
Chihuahua 3
Bulldog - French 3
Retriever - Labrador 3
Collie - Border 2
Retriever - Golden 2
Bulldog - American 2
Crossbred Canine/dog 2
Retriever - Chesapeake Bay 2
Domestic Longhair 2

Most Reported Reactions

Diarrhoea 9
Lethargy (see also Central nervous system depression in 'Neurological') 8
Vomiting 7
Decreased appetite 6
Polydipsia 5
Death by euthanasia 4
Not himself/herself 4
Urinary tract infection 4
Not eating 4
Immune mediated haemolytic anaemia 3
Polyuria 3
Lack of efficacy - NOS 3

Outcome Breakdown

Ongoing
19 (35.8%)
Outcome Unknown
16 (30.2%)
Recovered/Normal
10 (18.9%)
Died
4 (7.5%)
Euthanized
3 (5.7%)
Recovered with Sequela
1 (1.9%)

Cyclosporin Adverse Event Insights

53 reports name Cyclosporin; 7 recorded a death outcome (13.2% of reported events, not a population-level mortality rate). Active ingredient: Cyclosporin. Administration routes: Unknown, Oral, Ophthalmic, Intraocular.

By species: Dog (49 reports), Cat (4 reports). By breed: Shih Tzu (7), Chihuahua (3), Bulldog - French (3).

Leading clinical signs: Diarrhoea (9), Lethargy (see also Central nervous system depression in 'Neurological') (8), Vomiting (7), Decreased appetite (6). Outcome, 53 coded reports: Ongoing leads at 35.8%.

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.