March 1999: adverse event reports that FDA received

Month in which FDA received the reports

Read this first. FDA says 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. When looking at the results, be aware that there is no certainty that the reported drug or device caused the adverse event. This dataset should not be the sole source of information for clinical decision-making or other assumptions about the safety or effectiveness of a product. The adverse event may have been related to an underlying disease, other drugs used at the same time or other non-drug related sources.
FDA Center for Veterinary Medicine publishes these words. Source: Adverse Event Reports for Animal Drugs and Devices, read on 2 Oct 2026. The data have the reports that FDA received through 26 Jun 2026.

FDA received 1,017 adverse event reports for animal drugs in March 1999. It received 283 reports in March 1998. The average of the 12 months before March 1999 is 807 reports for each month.

Of the 1,017 reports, 60.6% are about dogs, 9.4% are about cats and 3.2% are about horses. The other reports are about other species, or give no species. A report is not proof that a drug caused a sign.

Search engines do not list month pages. The site keeps the page, and the list of months links it.

The months before and after

Reports for each month, Sep 1997 to Sep 1999. The column with the outline is March 1999.

Reports by species

Dog60.6%616
Cat9.4%96
Horse3.2%33
Other species, or species not given26.7%272

Drug pages with reports received in March 1999

The table has every drug page with 10 or more reports that FDA received in March 1999, in order of name. No count decides which drug is in the table. The table has 25 drug pages.

Drug pages with 10 or more reports received in March 1999, in order of name
Active ingredients	Reports received in March 1999
Amoxicillin	11
Atipamezole Hydrochloride	10
Carprofen	312
Ceftiofur Sodium	10
Cephapirin Sodium	13
Clomipramine Hydrochloride	18
Doramectin	16
Eprinomectin	24
Etodolac	57
Fenbendazole	13
Ketamine Hydrochloride	10
Lufenuron	17
Lufenuron + Milbemycin Oxime	35
Medetomidine	16
Melarsomine Dihydrochloride	11
Melengestrol Acetate	41
Milbemycin Oxime	37
Moxidectin	35
Oxibendazole	10
Oxytetracycline	17
Penicillin G Procaine	13
Pyrantel Pamoate	14
Selegiline Hydrochloride	57
Tiletamine Hydrochloride + Zolazepam Hydrochloride	12
Tilmicosin Phosphate	30

The openFDA records give the value "MSK" for the brand name and for the manufacturer name of each drug. FDA says that MSK means "masked". So the site cannot count a report for a brand.

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

Signs that the reports of the month 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 1,017 reports of the month.

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

Death14.7%149 reports
Accidental exposure[exposure that was not intended]12.3%125 reports
Vomiting11.8%120 reports
Anorexia[not eating]11.2%114 reports
Depression[dull, quiet or withdrawn]9.4%96 reports
No sign[no clinical sign was reported]9.1%93 reports
Death by euthanasia[the animal was euthanized]6.7%68 reports
Unclassifiable adverse event[event that fits no dictionary term]6.3%64 reports
Diarrhoea[diarrhea]5.9%60 reports
Elevated serum alkaline phosphatase (SAP)[a liver and bone enzyme above the normal range]5.3%54 reports
Elevated alanine aminotransferase (ALT)[a liver enzyme above the normal range]5%51 reports
Ineffective, heartworm larvae[legacy FDA term: the product did not have the expected effect (heartworm larvae)]4.2%43 reports
Convulsion[seizure]3.9%40 reports
Ineffective, estrus suppressio[legacy FDA term: the product did not have the expected effect (estrus suppressio)]3.9%40 reports

Show the next 1 signs

Elevated total bilirubin[bilirubin above the normal range]3.7%38 reports

Ingredients, all combinations

The list has every active ingredient with 10 or more reports received in March 1999, in order of name. It has 27 ingredients.

Show the 27 ingredients

The same month in other years

Cite this page

Pet Drug Reports. March 1999: adverse event reports for animal drugs. https://petdrugreports.com/month/1999-03/ 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

The counts come from the openFDA Animal and Veterinary adverse event files, export of 30 Oct 2026. The files have the reports that the FDA Center for Veterinary Medicine received through 26 Jun 2026. The files mask brand and manufacturer names. The site counts a drug by the active ingredients that each record gives, and gives no count to a brand, an application or a company. Ingredient names and the lists of approved products follow the FDA Green Book of 2 Nov 2026. The month is the month in which FDA received the report, not the month of the event.

The site does not publish report text, lot numbers or details of a reporter. FDA's record is the authority. See how the site counts reports, the data sources and the corrections page.

Questions about this month

Can the count for March 1999 change?: Yes. 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.
Does the month show when the event occurred?: No. The month is the month in which FDA received the report. The event can be from an earlier month.
Which sign is in the largest number of the reports of the month?: "Death" is in 149 reports of the 1,017 reports of March 1999 (14.7%).