October 2015: 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 6,399 adverse event reports for animal drugs in October 2015. It received 6,299 reports in October 2014. The average of the 12 months before October 2015 is 5,851 reports for each month.

Of the 6,399 reports, 77.8% are about dogs, 9.2% are about cats and 1.1% 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, Apr 2014 to Apr 2016. The column with the outline is October 2015.

Reports by species

Dog77.8%4,978
Cat9.2%591
Horse1.1%69
Other species, or species not given11.9%761

Drug pages with reports received in October 2015

The table has every drug page with 10 or more reports that FDA received in October 2015, in order of name. No count decides which drug is in the table. The table has 76 drug pages.

Show the 76 drug pages

Drug pages with 10 or more reports received in October 2015, in order of name
Active ingredients	Reports received in October 2015
(S) - methoprene	31
Afoxolaner	532
Amoxicillin + Clavulanate Potassium	37
Amoxicillin Trihydrate + Clavulanate Potassium	11
Atropine	11
Betamethasone Valerate + Clotrimazole + Gentamicin Sulfate	10
Buprenorphine	28
Butorphanol Tartrate	23
Carprofen	125
Cefovecin sodium	80
Cefpodoxime proxetil	26
Ceftiofur Crystalline Free Acid	15
Cephalexin	24
Cetirizine	12
Cyclosporine	85
Deracoxib	47
Dexamethasone	12
Dexmedetomidine	16
Dexmedetomidine hydrochloride	19
Diphenhydramine	40
Doxycycline	13
Emodepside + Praziquantel	18
Enrofloxacin	24
Eprinomectin	13
Estriol	11
Famotidine	22
Febantel + Praziquantel + Pyrantel Pamoate	36
Fentanyl	10
Firocoxib	42
Florfenicol + Terbinafine	112
Fluralaner	492
Furosemide	14
Gabapentin	11
Hydromorphone	10
Imidacloprid	24
Imidacloprid + Moxidectin	111
Insulin	84
Isoflurane	28
Ivermectin	87
Ivermectin + Praziquantel	25
Ivermectin + Praziquantel + Pyrantel Pamoate	70
Ivermectin + Pyrantel Pamoate	944
Ketamine Hydrochloride	21
Ketoconazole	22
Levothyroxine sodium	16
Lufenuron + Milbemycin Oxime	229
Lufenuron + Praziquantel	75
Maropitant	61
Melarsomine Dihydrochloride	96
Meloxicam	44
Methylprednisolone Acetate	15
Metronidazole	13
Midazolam	12
Milbemycin Oxime	33
Milbemycin Oxime + Spinosad	1,342
Monensin	25
Moxidectin	147
Nitenpyram	182
Oclacitinib	278
Omeprazole	16
Phenobarbital	12
Pimobendan	15
Polysulfated Glycosaminoglycan	41
Praziquantel + Pyrantel Pamoate	10
Prednisolone	24
Prednisolone + Trimeprazine Tartrate	26
Prednisone	39
Propofol	14
Pyrantel Pamoate	31
Robenacoxib	19
Selamectin	241
Spinosad	554
Tiletamine Hydrochloride + Zolazepam Hydrochloride	12
Tramadol	28
Trilostane	58
Tulathromycin	11

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 6,399 reports of the month.

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

Vomiting22%1,407 reports
Lethargy[unusually tired or inactive]8.9%569 reports
Ineffective, heartworm larvae[legacy FDA term: the product did not have the expected effect (heartworm larvae)]7.5%479 reports
Lack of efficacy (ectoparasite) - flea[the product did not have the expected effect: fleas]7.5%479 reports
Lack of efficacy - NOS[the product did not have the expected effect]7.3%468 reports
Emesis[vomiting]6.1%389 reports
Lack of efficacy (endoparasite) - hookworm[the product did not have the expected effect: hookworms]5.9%378 reports
Digestive tract disorder NOS[digestive problem, type not specified]5.4%345 reports
Diarrhoea[diarrhea]5.3%342 reports
Cardiac disorder NOS[heart problem, type not specified]3.6%231 reports
Anorexia[not eating]3.5%225 reports
Product problem[a product quality report, not a sign in an animal]3.2%202 reports
Unpalatable[legacy FDA term: the animal would not take it]3%194 reports
Ineffective, ascarids NOS[legacy FDA term: the product did not have the expected effect (ascarids nos)]2.8%180 reports

Show the next 1 signs

Other abnormal test result NOS[abnormal laboratory result, type not specified]2.8%176 reports

Ingredients, all combinations

The list has every active ingredient with 10 or more reports received in October 2015, in order of name. It has 76 ingredients.

Show the 76 ingredients

The same month in other years

Cite this page

Pet Drug Reports. October 2015: adverse event reports for animal drugs. https://petdrugreports.com/month/2015-10/ 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 October 2015 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 1,407 reports of the 6,399 reports of October 2015 (22%).