Horse: adverse event reports for animal drugs

Drug pages with reports about horses

The table has every drug page with 20 or more reports about horses, in order of name. No count decides which drug is in the table. The table has 66 drug pages.

Download all drugs for this species (CSV)

Signs that the reports list

A sign is a coded term from the report. The words in brackets are a plain gloss of the term. The percentage is the share of the 18,674 reports about horses that list the sign.

The sign that is in the largest number of the reports comes first.

1. Lack of efficacy - NOS[the product did not have the expected effect]8.2%1,522 reports
2. Death8.1%1,507 reports
3. Abdominal pain6.5%1,215 reports
4. Anorexia[not eating]6.2%1,163 reports
5. Injection site swelling[swelling where the injection was given]5.5%1,018 reports
6. Diarrhoea[diarrhea]5.3%986 reports
7. Depression[dull, quiet or withdrawn]5.1%946 reports
8. Ataxia[unsteady, uncoordinated movement]4.7%877 reports
9. Application site swelling[swelling where the product was applied]4.6%853 reports
10. Lip oedema4.5%848 reports
11. Fever4.4%828 reports
12. Ineffective, gastric ulcer(s)[legacy FDA term: the product did not have the expected effect (gastric ulcer(s))]4.4%816 reports
13. Death by euthanasia[the animal was euthanized]4.2%783 reports
14. Colic4%747 reports

Download all signs (CSV)

Reports by month and by year

FDA says that a report can take 3 to 6 months to reach the public data. The newest months can get more reports in a later update.

What the reports record

Each share of age, weight and kind is of the 18,674 reports about horses. The thin bar is the same share in all 1,378,761 reports.

Ingredients, all combinations

The list has every active ingredient with 20 or more reports about horses, in order of name. It has 67 ingredients.

Breeds with a page

• American Saddlebred
• Appaloosa
• Arab
• Dutch Warmblood
• Hanovarian
• Miniature
• Morgan
• Mustang
• Paint
• Pony
• Quarter Horse
• Standardbred
• Tennessee Walking Horse
• Thoroughbred
• Warmblood

A breed has a page when 100 or more reports give that one breed. Reports about crossbred animals are in the species count only.

Cite this page

Pet Drug Reports. Horse: adverse event reports for animal drugs. https://petdrugreports.com/species/horse/ Source: FDA Center for Veterinary Medicine, openFDA Animal and Veterinary adverse event reports, export of 30 Oct 2026. Reports received through 26 Jun 2026.

Where the data come from

Questions about these reports

What ages are the horses in the reports?

The figures are shares of the 18,674 reports about horses received from January 1987 to June 2026. 33.1% give an age of 12 years and over. 12.5% give an age of 8 to 11 years. 27.9% give no age.

How does the count of the latest 12 months compare with the 12 months before?

FDA received 932 reports in the 12 months to June 2026. It received 826 reports in the 12 months before. FDA says that a report can take 3 to 6 months to reach the public data. The newest months can get more reports in a later update.

What kinds of report are in the count?

Of the 18,674 reports received from January 1987 to June 2026, 83.6% are about a safety issue only. 15.1% are about a lack of expected effectiveness, alone or with a safety issue. 0.8% are about a defect of the product or its package.

Do more reports for horses show a higher risk for horses?

No. FDA states this about the data.

An API dataset query result cannot be used to estimate the risk associated with the product or compare one drug or device product with another.

Commonly used products may have a higher number of reported adverse events due to the higher total number of animals being given the product.

FDA Center for Veterinary Medicine. Source: Adverse Event Reports for Animal Drugs and Devices