October 2000: adverse event reports received

1,495 reports in the openFDA release of 28 Sep 2026

Read this first · FDA's caveat, in its words

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

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Not veterinary advice. This site lists what was reported to FDA. For an animal that is unwell, contact a veterinarian.

1,495reports received

1,022same month a year earlier+46%

1,572monthly average, preceding 12 months

53.6%concern dogscats 15.3%

FDA's database holds 1,495 adverse event reports received in October 2000, against 1,022 in the same month a year earlier and a monthly average of 1,572 over the preceding 12 months.

53.6% of the month's reports concern dogs, 15.3% cats and 3.3% horses; the rest concern other species, exposed people, or give no species.

By active ingredient, the drugs named most often were selamectin (462), carprofen (337) and selegiline hydrochloride (59), and the terms listed most often were accidental exposure (276), no sign (202) and vomiting (179). Report volume has a seasonal shape, with more reports in the warmer months when parasite products are in heavier use.

The months around it

Drugs named most often, by active ingredient

Active ingredients recorded for the drug	Reports	Share of the month's reports
Selamectin	462	30.9%
Carprofen	337	22.5%
Selegiline Hydrochloride	59	3.9%
(S) - methoprene	42	2.8%
Etodolac	41	2.7%
Tilmicosin Phosphate	39	2.6%
Milbemycin Oxime	38	2.5%
Ketamine Hydrochloride	30	2%
Doramectin	28	1.9%
Amoxicillin	25	1.7%
Moxidectin	25	1.7%
Lufenuron + Milbemycin Oxime	17	1.1%
Oxibendazole	17	1.1%
Melarsomine Dihydrochloride	14	0.9%
Sulfadimethoxine	14	0.9%

Ordered by report count, which follows how widely each drug was in use. FDA states that these data cannot be used to estimate risk or to compare one product with another. Brand and manufacturer names are masked by FDA in these records.

Signs listed most often

Accidental exposure[exposure that was not intended]18.5%276
No sign[no clinical sign was reported]13.5%202
Vomiting12%179
Depression[dull, quiet or withdrawn]9.4%140
Death8.8%131
Unclassifiable adverse event[event that fits no dictionary term]7.3%109
Anorexia[not eating]7%105
Diarrhoea[diarrhea]5.8%86
Ataxia[unsteady, uncoordinated movement]4.5%68
Convulsion[seizure]4.3%65
Elevated alanine aminotransferase (ALT)[a liver enzyme above the normal range]4.1%62
Elevated serum alkaline phosphatase (SAP)[a liver and bone enzyme above the normal range]4%60
Death by euthanasia[the animal was euthanized]3.5%53
Lack of efficacy (ectoparasite) - flea[the product did not have the expected effect: fleas]3%45
Elevated blood urea nitrogen (BUN)[a kidney value above the normal range]2.5%38

Single ingredients, pooled

Selamectin30.9%462

Carprofen22.5%337

Selegiline Hydrochloride3.9%59

Milbemycin Oxime3.7%55

(S) - methoprene2.8%42

Etodolac2.7%41

Tilmicosin Phosphate2.6%39

Ketamine Hydrochloride2%30

Doramectin1.9%28

Amoxicillin1.7%25

Moxidectin1.7%25

Lufenuron1.5%22

Species

Dog53.6%801

Cat15.3%229

Horse3.3%49

Other or not given27.8%416

Questions about October 2000

How many animal drug adverse event reports did FDA receive in October 2000?

1,495 reports are in the openFDA release of 28 Sep 2026. The same month a year earlier has 1,022.

Which drugs were named most often?

By active ingredient: selamectin (462), carprofen (337), selegiline hydrochloride (59), (s) - methoprene (42) and etodolac (41). Brands are masked in the public data.

Which signs were listed most often?

accidental exposure (276), no sign (202), vomiting (179), depression (140) and death (131).

Can the count for a month still change?

Yes. FDA posts reports quarterly with a delay of three to six months, so the newest months are incomplete and usually grow in later releases. Older months change little.

Does a busy month mean something went wrong that month?

Not by itself. The date is when FDA received the report, not when the event happened, and volume follows season, product launches and publicity. FDA states that "there is no certainty that the reported drug or device caused the adverse event" and that the event "may have been related to an underlying disease, other drugs used at the same time or other non-drug related sources."

Where this comes from. Counts are built from the openFDA Animal & Veterinary adverse event bulk files released 28 Sep 2026, which hold reports FDA's Center for Veterinary Medicine received through 31 Mar 2026. openFDA masks brand and manufacturer names in these files, so drugs are counted by the active ingredients each record discloses and no figure is attributed to a brand, application or company. Ingredient names, and the separate reference lists of approved products, follow the FDA Green Book as of 1 Oct 2026. The month is the date FDA first received the report, not the date of the event. No report text, lot numbers or reporter details are published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.