September 1997: adverse event reports received

346 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.

346reports received

179same month a year earlier+93%

317monthly average, preceding 12 months

49.4%concern dogscats 7.2%

FDA's database holds 346 adverse event reports received in September 1997, against 179 in the same month a year earlier and a monthly average of 317 over the preceding 12 months.

49.4% of the month's reports concern dogs, 7.2% cats and 10.4% horses; the rest concern other species, exposed people, or give no species.

By active ingredient, the drugs named most often were carprofen (101), ivermectin (23) and tilmicosin phosphate (18), and the terms listed most often were death (86), accidental exposure (46) and no sign (41). 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
Carprofen	101	29.2%
Ivermectin	23	6.6%
Tilmicosin Phosphate	18	5.2%
Moxidectin	17	4.9%
Lufenuron	13	3.8%
Medetomidine	12	3.5%
Vitamin E	11	3.2%
Atipamezole Hydrochloride	9	2.6%
Amoxicillin	8	2.3%
Milbemycin Oxime	8	2.3%
Oxytetracycline Hydrochloride	8	2.3%
Diethylcarbamazine Citrate	7	2%
Pyrantel Pamoate	6	1.7%
Monensin	5	1.4%
Oxibendazole	5	1.4%

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

Death24.9%86
Accidental exposure[exposure that was not intended]13.3%46
No sign[no clinical sign was reported]11.8%41
Unclassifiable adverse event[event that fits no dictionary term]10.7%37
Vomiting9%31
Depression[dull, quiet or withdrawn]8.7%30
Anorexia[not eating]8.1%28
Convulsion[seizure]6.9%24
Ataxia[unsteady, uncoordinated movement]5.5%19
Diarrhoea[diarrhea]4.6%16
Death by euthanasia[the animal was euthanized]3.8%13
Anaemia NOS[low red blood cell count]3.5%12
PR-liver, lesion(s)[legacy FDA term: lesions found in the liver]3.2%11
Thrombocytopenia[low platelet count]3.2%11
Pruritus[itching]2.9%10

Single ingredients, pooled

Carprofen29.2%101

Ivermectin6.9%24

Tilmicosin Phosphate5.2%18

Moxidectin4.9%17

Lufenuron4%14

Medetomidine3.5%12

Vitamin E3.2%11

Atipamezole Hydrochloride2.6%9

Milbemycin Oxime2.6%9

Amoxicillin2.3%8

Oxytetracycline Hydrochloride2.3%8

Diethylcarbamazine Citrate2%7

Species

Dog49.4%171

Cat7.2%25

Horse10.4%36

Other or not given32.9%114

Questions about September 1997

How many animal drug adverse event reports did FDA receive in September 1997?

346 reports are in the openFDA release of 28 Sep 2026. The same month a year earlier has 179.

Which drugs were named most often?

By active ingredient: carprofen (101), ivermectin (23), tilmicosin phosphate (18), moxidectin (17) and lufenuron (13). Brands are masked in the public data.

Which signs were listed most often?

death (86), accidental exposure (46), no sign (41), unclassifiable adverse event (37) and vomiting (31).

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.