Pet Drug Reports

November 2023: 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 . The data have the reports that FDA received through .

FDA received 5,744 adverse event reports for animal drugs in November 2023. It received 4,760 reports in November 2022. The average of the 12 months before November 2023 is 5,291 reports for each month.

Of the 5,744 reports, 69.3% are about dogs, 18.3% are about cats and 1.2% 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, May 2022 to May 2024. The column with the outline is November 2023.

Reports by species

  • Dog69.3%3,979
  • Cat18.3%1,053
  • Horse1.2%70
  • Other species, or species not given11.2%642

Drug pages with reports received in November 2023

The table has every drug page with 10 or more reports that FDA received in November 2023, in order of name. No count decides which drug is in the table. The table has 99 drug pages.

Show the 99 drug pages
Drug pages with 10 or more reports received in November 2023, in order of name
Active ingredientsReports received in November 2023
(S) - methoprene22
Acepromazine Maleate15
Afoxolaner320
Afoxolaner + Moxidectin + Pyrantel Pamoate114
Alfaxalone11
Amantadine10
Amlodipine12
Amoxicillin12
Amoxicillin Trihydrate + Clavulanate Potassium22
Atipamezole Hydrochloride19
Bedinvetmab518
Benazepril10
Bexagliflozin127
Buprenorphine106
Butorphanol Tartrate53
Capromorelin27
Carprofen134
Cefovecin sodium63
Cefpodoxime proxetil21
Clotrimazole + Gentamicin11
Cyclosporine34
Deracoxib11
Dexamethasone14
Dexmedetomidine35
Dexmedetomidine hydrochloride18
Diphenhydramine34
Doxycycline38
Emodepside + Praziquantel12
Enrofloxacin20
Eprinomectin + Esafoxolaner + Praziquantel97
Famotidine30
Febantel + Praziquantel + Pyrantel Pamoate26
Florfenicol + Mometasone furoate + Terbinafine51
Flunixin Meglumine12
Fluoxetine hydrochloride10
Fluralaner429
Fluralaner + Moxidectin46
Frunevetmab229
Furosemide15
Gabapentin155
Gentamicin Sulfate + Hydrocortisone aceponate + Miconazole Nitrate14
Grapiprant54
Hydromorphone12
Imidacloprid63
Imidacloprid + Moxidectin41
Insulin57
Isoflurane37
Ivermectin27
Ivermectin + Praziquantel + Pyrantel Pamoate16
Ivermectin + Pyrantel Pamoate513
Ketamine Hydrochloride28
Ketoconazole13
Levothyroxine sodium16
Lotilaner94
Lufenuron + Milbemycin Oxime36
Lufenuron + Milbemycin Oxime + Praziquantel52
Maropitant129
Medetomidine hydrochloride + Vatinoxan hydrochloride22
Melarsomine Dihydrochloride70
Meloxicam43
Methimazole12
Methylprednisolone Acetate13
Metronidazole23
Midazolam24
Milbemycin Oxime29
Milbemycin Oxime + Praziquantel246
Milbemycin Oxime + Spinosad111
Mirtazapine18
Molidustat17
Monensin16
Moxidectin311
Moxidectin + Pyrantel Pamoate + Sarolaner11
Nitenpyram118
Oclacitinib167
Omeprazole31
Ondansetron10
Pergolide mesylate19
Phenylpropanolamine hydrochloride12
Pimobendan63
Polysulfated Glycosaminoglycan47
Praziquantel37
Praziquantel + Pyrantel Pamoate14
Prednisolone32
Prednisone79
Propofol23
Pyrantel Pamoate11
Pyrantel Pamoate + Sarolaner765
Robenacoxib26
Sarolaner75
Sarolaner + Selamectin97
Selamectin91
Sodium Chloride52
Sucralfate11
Telmisartan12
Tigilanol tiglate55
Trazodone17
Trilostane72
Tulathromycin28
Velagliflozin72

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 5,744 reports of the month.

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

  1. Vomiting11.7%673 reports
  2. Lack of efficacy (endoparasite) - heartworm[the product did not have the expected effect: heartworm]9.2%530 reports
  3. Lethargy[unusually tired or inactive]7.6%437 reports
  4. Diarrhoea[diarrhea]6.4%366 reports
  5. Lack of efficacy (ectoparasite) - flea[the product did not have the expected effect: fleas]6.1%352 reports
  6. Lack of efficacy - NOS[the product did not have the expected effect]5.7%325 reports
  7. Lack of efficacy (endoparasite) - hookworm[the product did not have the expected effect: hookworms]4.9%282 reports
  8. Lack of efficacy (bacteria) - Borrelia[the product did not have the expected effect: Borrelia (Lyme disease bacteria)]4.1%233 reports
  9. Seizure NOS[seizure, type not specified]3.2%182 reports
  10. Death3.1%179 reports
  11. Lack of efficacy (endoparasite) - roundworm NOS[the product did not have the expected effect: roundworms]2.9%164 reports
  12. Not eating2.7%153 reports
  13. Ataxia[unsteady, uncoordinated movement]2.3%132 reports
  14. Behavioural disorder NOS[behaviour change, type not specified]2.2%126 reports
Show the next 1 signs
  1. Weight loss2.2%124 reports

Ingredients, all combinations

The list has every active ingredient with 10 or more reports received in November 2023, in order of name. It has 101 ingredients.

Show the 101 ingredients

The same month in other years

Cite this page

Pet Drug Reports. November 2023: adverse event reports for animal drugs. https://petdrugreports.com/month/2023-11/ Source: FDA Center for Veterinary Medicine, openFDA Animal and Veterinary adverse event reports, export of . Reports received through .

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 November 2023 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?

"Vomiting" is in 673 reports of the 5,744 reports of November 2023 (11.7%).