Total Reports
51
FDA CVM filings
Horse /
FDA CVM · 2025 release 51 reports on file
Friesian - FDA Adverse Event Profile
Adverse-event records for Friesian (Horse) from the FDA Center for Veterinary Medicine.
Data updated June 2026
The record at a glance
With 51 reports on file, Friesian sits at #272 among horse breeds by volume; death-coded share is 7.8% (4 reports).
- #272
- most-reported horse breed
- 7.8%
- death-coded report share
- 9
- Lack of efficacy - NOS - top reaction
- 12.1 yr
- average age at report
Higher volume usually means a more popular breed, not a riskier one, compare against how common the breed is.
Deaths Reported
4
of 51 reports
Death Rate
7.8%
death-coded share
Avg Age at Report
12.1 yr
303.8 kg avg weight
Death-Coded Outcome Share
Friesian death-coded reports 7.8%
Cross-breed median
7.8% of 51 friesian reports involved a death outcome.
How to read this number
Read alongside breed popularity, veterinary access, and owner awareness, these shape how many events ever reach the FDA. The comparison line marks the cross-breed median death-coded share (about 4.8%) among breeds with 50 or more reports; values above it suggest higher reporting bias toward severe outcomes, not necessarily higher true mortality.
Average weight at time of report: 303.8 kg (669.9 lbs)
Top Reported Reactions
Lack of efficacy - NOS 9
Diarrhoea 4
Lethargy (see also Central nervous system depression in 'Neurological') 4
Injection site swelling 4
INEFFECTIVE, GASTRIC ULCER(S) 4
Most Referenced Drugs
Omeprazole 10
Pergolide Mesylate 9
Ivermectin(1.55%)/Praziquantel(7.75%) Paste 4
Praziquantel;Moxidectin 4
Polysulfated Glycosaminoglycan 4
Outcome Breakdown
Outcome Unknown
19 (37.3%)
Recovered/Normal
14 (27.5%)
Ongoing
14 (27.5%)
Euthanized
2 (3.9%)
Died
2 (3.9%)
Gender Distribution
Male 34 (66.7%)
Female 15 (29.4%)
Mixed 1 (2.0%)
Unknown 1 (2.0%)
Reports by Year
| Year | Reports | Trend |
|---|---|---|
| 2011 | 2 | |
| 2012 | 3 | |
| 2013 | 3 | |
| 2014 | 2 | |
| 2015 | 3 | |
| 2016 | 3 | |
| 2018 | 2 | |
| 2019 | 3 | |
| 2020 | 4 | |
| 2021 | 7 | |
| 2022 | 4 | |
| 2023 | 5 | |
| 2024 | 5 | |
| 2025 | 5 | |
Friesian Pet Health Insights
Friesian accounts for 51 FDA adverse event reports, ranking #272 by volume among horse breeds, with 4 reports (7.8%) coded as a death outcome. Mean age at report: 12.1 years, average weight 303.8 kg (669.9 lbs).
Top reported signs: Lack of efficacy - NOS (9), Diarrhoea (4), Lethargy (see also Central nervous system depression in 'Neurological') (4). Most-referenced drug: Omeprazole (10 reports), followed by Pergolide Mesylate (9) and Ivermectin(1.55%)/Praziquantel(7.75%) Paste (4).
Outcome coding on 51 status-recorded reports is dominated by Outcome Unknown (37.3%). Annual submissions ranged 2,011-2,025 across 14 years on file.
Horse Breeds With a Similar Report Volume
Frequently Asked Questions
How many FDA adverse event reports involve Friesian? ▼
There are 51 adverse event reports involving Friesian in the FDA database, with 4 reports involving death (7.8% death rate). Friesian ranks #272 by report volume.
What are the most common adverse reactions reported for Friesian? ▼
The most commonly reported adverse reactions for Friesian are Lack of efficacy - NOS (9 reports), Diarrhoea (4 reports), Lethargy (see also Central nervous system depression in 'Neurological') (4 reports), Injection site swelling (4 reports), INEFFECTIVE, GASTRIC ULCER(S) (4 reports).
What drugs are most frequently associated with Friesian adverse events? ▼
The drugs most frequently referenced in Friesian adverse event reports are Omeprazole (10 reports), Pergolide Mesylate (9 reports), Ivermectin(1.55%)/Praziquantel(7.75%) Paste (4 reports), Praziquantel;Moxidectin (4 reports), Polysulfated Glycosaminoglycan (4 reports).
What is the average age of Friesian in adverse event reports? ▼
The average age of Friesian at the time of adverse event reports is 12.1 years, with an average weight of 303.8 kg (669.9 lbs).
Does a high number of adverse event reports mean Friesian is unhealthy? ▼
No. FDA adverse event reports are voluntarily submitted and do not prove causation. Popular breeds with more veterinary visits tend to have more reports. The data reflects reporting patterns, not actual incidence rates. Always consult a veterinarian for health decisions.
Where does this Friesian safety data come from? ▼
All data comes from the FDA Center for Veterinary Medicine's adverse event reporting system. Pet owners, veterinarians, and manufacturers voluntarily submit reports about adverse events potentially linked to animal drugs and other products.
Compare a breed's report volume against how common the breed is before drawing conclusions. See our methodology for how death rate and rankings are computed.
Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. Breed figures are computed directly from 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.