Drug profile

The FDA adverse-event record for Deslorelin Acetate

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

247
adverse-event reports
3.2%
death-coded share
Unknown
most-reported species
68
Implant, Abnormal - 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.
247
Total Reports
8
Deaths Reported
3.2%
Death Rate

Active Ingredients

Deslorelin Acetate

Administration Routes

UnknownSubcutaneousParenteralIntramuscular

Species Affected

Unknown 139
Ferret 86
Horse 12
Chicken 4
Cat 3
Dog 2
Rat 1

Most Affected Breeds

Unknown 225
Horse (unknown) 5
Quarter Horse 4
Chicken (unknown) 4
Domestic Shorthair 2
Dog (unknown) 2
Arab 1
Hanovarian 1
Mixed (Horse) 1
Cat (unknown) 1

Most Reported Reactions

Implant, Abnormal 68
Lack of efficacy - NOS 48
Difficulty of Use 45
Product defect, product difficult to use/handle (see also 'Drug device difficult to use/handle') 34
Appearance, Abnormal 24
Administration device NOS, malfunction 24
Dispenser, Abnormal 12
Administration device NOS, abnormal 12
INEFFECTIVE, OVULATION 9
Lack of hair regrowth 8
Implant, Damaged 8
Product Defect, General 6

Outcome Breakdown

Outcome Unknown
70 (68.0%)
Recovered/Normal
23 (22.3%)
Euthanized
4 (3.9%)
Died
4 (3.9%)
Ongoing
1 (1.0%)
Recovered with Sequela
1 (1.0%)

Deslorelin Acetate Adverse Event Insights

247 reports name Deslorelin Acetate; 8 recorded a death outcome (3.2% of reported events, not a population-level mortality rate). Active ingredient: Deslorelin Acetate. Administration routes: Unknown, Subcutaneous, Parenteral, Intramuscular.

By species: Unknown (139 reports), Ferret (86 reports), Horse (12 reports). By breed: Unknown (225), Horse (unknown) (5), Quarter Horse (4).

Leading clinical signs: Implant, Abnormal (68), Lack of efficacy - NOS (48), Difficulty of Use (45), Product defect, product difficult to use/handle (see also 'Drug device difficult to use/handle') (34). Outcome, 103 coded reports: Outcome Unknown leads at 68.0%.

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.