May 2013: 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 6,737 adverse event reports for animal drugs in May 2013. It received 6,702 reports in May 2012. The average of the 12 months before May 2013 is 5,687 reports for each month.

Of the 6,737 reports, 79.7% are about dogs, 7.2% are about cats and 0.8% 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 2011 to Nov 2013. The column with the outline is May 2013.

Reports by species

Dog79.7%5,371
Cat7.2%485
Horse0.8%57
Other species, or species not given12.2%824

Drug pages with reports received in May 2013

The table has every drug page with 10 or more reports that FDA received in May 2013, in order of name. No count decides which drug is in the table. The table has 74 drug pages.

Show the 74 drug pages

Drug pages with 10 or more reports received in May 2013, in order of name
Active ingredients	Reports received in May 2013
(S) - methoprene	43
Acepromazine Maleate	14
Amitraz	11
Amitraz + (S) - methoprene	16
Amoxicillin + Amoxicillin Trihydrate + Clavulanate Potassium	32
Amoxicillin Trihydrate + Clavulanate Potassium	29
Atipamezole Hydrochloride	12
Buprenorphine	15
Butorphanol Tartrate	27
Carprofen	147
Cefovecin sodium	58
Cefpodoxime proxetil	13
Ceftiofur Crystalline Free Acid	12
Cephalexin	30
Clindamycin	10
Clotrimazole + Gentamicin Sulfate + Mometasone Furoate Monohydrate	10
Cyclosporine	198
Deracoxib	22
Desoxycorticosterone Pivalate	18
Dexamethasone	14
Dexmedetomidine hydrochloride	17
Diphenhydramine	52
Doxycycline	12
Emodepside + Praziquantel	39
Enalapril Maleate	20
Enrofloxacin	58
Eprinomectin	16
Estriol	26
Famotidine	25
Febantel + Praziquantel + Pyrantel Pamoate	25
Fenbendazole	28
Firocoxib	51
Fluoxetine hydrochloride	18
Furosemide	21
Gentamicin Sulfate + Hydrocortisone aceponate + Miconazole Nitrate	21
Hydroxyzine	19
Imidacloprid	29
Imidacloprid + Moxidectin	178
Insulin	21
Isoflurane	17
Ivermectin	185
Ivermectin + Praziquantel	15
Ivermectin + Praziquantel + Pyrantel Pamoate	131
Ivermectin + Pyrantel Pamoate	942
Ketamine Hydrochloride	19
Ketoconazole	21
Levothyroxine sodium	25
Lufenuron + Milbemycin Oxime	94
Maropitant	56
Melarsomine Dihydrochloride	99
Meloxicam	79
Metronidazole	21
Milbemycin Oxime	73
Milbemycin Oxime + Spinosad	2,749
Monensin	30
Moxidectin	118
Nitenpyram	27
Orbifloxacin + Posaconazole	14
Phenobarbital	17
Pimobendan	24
Polysulfated Glycosaminoglycan	11
Praziquantel + Pyrantel Pamoate	35
Prednisolone	10
Prednisolone + Trimeprazine Tartrate	10
Prednisone	63
Propofol	21
Pyrantel Pamoate	31
Robenacoxib	19
Selamectin	227
Spinosad	876
Sucralfate	12
Tramadol	35
Trilostane	63
Vitamin E	12

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 6,737 reports of the month.

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

Emesis[vomiting]26.8%1,806 reports
Lethargy[unusually tired or inactive]12.4%838 reports
Vomiting10.5%708 reports
Lack of efficacy - NOS[the product did not have the expected effect]8.3%557 reports
Diarrhoea[diarrhea]6%407 reports
Ineffective, heartworm larvae[legacy FDA term: the product did not have the expected effect (heartworm larvae)]5.5%372 reports
Lack of efficacy (ectoparasite) - flea[the product did not have the expected effect: fleas]5.5%370 reports
Digestive tract disorder NOS[digestive problem, type not specified]5.3%354 reports
Lack of efficacy (endoparasite) - hookworm[the product did not have the expected effect: hookworms]5%339 reports
Unpalatable[legacy FDA term: the animal would not take it]4.9%330 reports
Anorexia[not eating]3.7%249 reports
Other abnormal test result NOS[abnormal laboratory result, type not specified]3.2%217 reports
Ineffective, ascarids NOS[legacy FDA term: the product did not have the expected effect (ascarids nos)]3.1%211 reports
Cardiac disorder NOS[heart problem, type not specified]2.9%198 reports

Show the next 1 signs

Behavioural disorder NOS[behaviour change, type not specified]2.8%191 reports

Ingredients, all combinations

The list has every active ingredient with 10 or more reports received in May 2013, in order of name. It has 74 ingredients.

Show the 74 ingredients

The same month in other years

Cite this page

Pet Drug Reports. May 2013: adverse event reports for animal drugs. https://petdrugreports.com/month/2013-05/ 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 May 2013 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?: "Emesis" is in 1,806 reports of the 6,737 reports of May 2013 (26.8%).