Pet Drug Reports

May 2020: 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 6,401 adverse event reports for animal drugs in May 2020. It received 7,456 reports in May 2019. The average of the 12 months before May 2020 is 5,892 reports for each month.

Of the 6,401 reports, 75.7% are about dogs, 9.7% are about cats and 0.9% 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, Nov 2018 to Nov 2020. The column with the outline is May 2020.

Reports by species

  • Dog75.7%4,847
  • Cat9.7%621
  • Horse0.9%60
  • Other species, or species not given13.6%873

Drug pages with reports received in May 2020

The table has every drug page with 10 or more reports that FDA received in May 2020, in order of name. No count decides which drug is in the table. The table has 77 drug pages.

Show the 77 drug pages
Drug pages with 10 or more reports received in May 2020, in order of name
Active ingredientsReports received in May 2020
(S) - methoprene13
Afoxolaner583
Amoxicillin Trihydrate + Clavulanate Potassium34
Buprenorphine13
Butorphanol Tartrate23
Capromorelin15
Carprofen94
Cefovecin sodium57
Cefpodoxime proxetil13
Ceftiofur Crystalline Free Acid12
Clotrimazole + Gentamicin24
Cyclosporine42
Deracoxib22
Dexamethasone17
Dexamethasone + Neomycin Sulfate + Thiabendazole10
Dexmedetomidine hydrochloride20
Diphenhydramine33
Doramectin11
Doxycycline40
Emodepside + Praziquantel26
Enrofloxacin14
Eprinomectin19
Febantel + Praziquantel + Pyrantel Pamoate37
Fenbendazole16
Firocoxib12
Florfenicol + Mometasone furoate + Terbinafine40
Florfenicol + Terbinafine11
Fluralaner1,040
Fluralaner + Moxidectin73
Gabapentin32
Gentamicin Sulfate + Hydrocortisone aceponate + Miconazole Nitrate20
Grapiprant82
Imidacloprid42
Imidacloprid + Moxidectin105
Insulin57
Isoflurane12
Ivermectin65
Ivermectin + Praziquantel + Pyrantel Pamoate21
Ivermectin + Pyrantel Pamoate819
Ketoconazole14
Levothyroxine sodium14
Lotilaner218
Lufenuron + Milbemycin Oxime136
Lufenuron + Milbemycin Oxime + Praziquantel79
Maropitant51
Melarsomine Dihydrochloride78
Meloxicam61
Methylprednisolone Acetate10
Metronidazole21
Milbemycin Oxime59
Milbemycin Oxime + Praziquantel442
Milbemycin Oxime + Spinosad467
Mirtazapine22
Monensin15
Moxidectin487
Nitenpyram81
Oclacitinib177
Omeprazole21
Pergolide mesylate13
Phenylpropanolamine hydrochloride41
Pimobendan30
Polysulfated Glycosaminoglycan25
Praziquantel10
Praziquantel + Pyrantel Pamoate24
Prednisolone19
Prednisone43
Propofol16
Pyrantel Pamoate24
Pyrantel Pamoate + Sarolaner68
Robenacoxib10
Sarolaner318
Sarolaner + Selamectin146
Selamectin131
Sodium Chloride34
Spinosad69
Tramadol15
Trilostane81

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 6,401 reports of the month.

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

  1. Vomiting19.5%1,250 reports
  2. Lethargy[unusually tired or inactive]9.3%596 reports
  3. Lack of efficacy (endoparasite) - heartworm[the product did not have the expected effect: heartworm]8.9%569 reports
  4. Diarrhoea[diarrhea]5.5%353 reports
  5. Ineffective, hooks[legacy FDA term: the product did not have the expected effect (hooks)]5.2%333 reports
  6. Lack of efficacy (ectoparasite) - flea[the product did not have the expected effect: fleas]4.4%284 reports
  7. Lack of efficacy (ectoparasite) - tick NOS[the product did not have the expected effect: ticks]4.4%280 reports
  8. Seizure NOS[seizure, type not specified]3.7%240 reports
  9. Unpalatable[legacy FDA term: the animal would not take it]3.1%198 reports
  10. Emesis (multiple)[vomiting more than once]2.9%186 reports
  11. Product problem[a product quality report, not a sign in an animal]2.5%163 reports
  12. Anorexia[not eating]2.5%158 reports
  13. Not eating2.4%154 reports
  14. Death2.2%144 reports
Show the next 1 signs
  1. Product Defect, General[a product quality report, not a sign in an animal]2.2%141 reports

Ingredients, all combinations

The list has every active ingredient with 10 or more reports received in May 2020, in order of name. It has 75 ingredients.

Show the 75 ingredients

The same month in other years

Cite this page

Pet Drug Reports. May 2020: adverse event reports for animal drugs. https://petdrugreports.com/month/2020-05/ 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 May 2020 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 1,250 reports of the 6,401 reports of May 2020 (19.5%).