June 2026: 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 4,915 adverse event reports for animal drugs in June 2026. It received 7,301 reports in June 2025. The average of the 12 months before June 2026 is 6,440 reports for each month.

Of the 4,915 reports, 77.9% are about dogs, 13.5% are about cats and 1.4% 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, Dec 2024 to Jun 2026. The column with the outline is June 2026.

Reports by species

Dog77.9%3,827
Cat13.5%665
Horse1.4%67
Other species, or species not given7.2%356

Drug pages with reports received in June 2026

The table has every drug page with 10 or more reports that FDA received in June 2026, in order of name. No count decides which drug is in the table. The table has 82 drug pages.

Show the 82 drug pages

Drug pages with 10 or more reports received in June 2026, in order of name
Active ingredients	Reports received in June 2026
Afoxolaner	147
Afoxolaner + Moxidectin + Pyrantel Pamoate	285
Amantadine	17
Amoxicillin	13
Amoxicillin Trihydrate + Clavulanate Potassium	17
Atinvicitinib	133
Atipamezole Hydrochloride	10
Bedinvetmab	244
Bexagliflozin	72
Buprenorphine	42
Butorphanol Tartrate	22
Capromorelin	17
Carprofen	107
Cefovecin sodium	35
Cefpodoxime proxetil	15
Cyclosporine	31
Dexamethasone	34
Dexmedetomidine	14
Diphenhydramine	43
Doxycycline	37
Eprinomectin + Esafoxolaner + Praziquantel	57
Famotidine	12
Febantel + Praziquantel + Pyrantel Pamoate	27
Fenbendazole	13
Florfenicol + Mometasone furoate + Terbinafine	28
Fluoxetine hydrochloride	20
Fluralaner	807
Fluralaner + Moxidectin	41
Frunevetmab	112
Gabapentin	130
Gentamicin Sulfate + Hydrocortisone aceponate + Miconazole Nitrate	11
Grapiprant	32
Ilunocitinib	90
Imidacloprid	26
Imidacloprid + Moxidectin	27
Insulin	29
Isoflurane	26
Ivermectin	11
Ivermectin + Pyrantel Pamoate	185
Ketamine Hydrochloride	19
Ketoconazole	18
Lotilaner	81
Lotilaner + Moxidectin + Praziquantel + Pyrantel Pamoate	341
Lufenuron + Milbemycin Oxime	19
Lufenuron + Milbemycin Oxime + Praziquantel	32
Maropitant	89
Melarsomine Dihydrochloride	56
Meloxicam	35
Methimazole	14
Metronidazole	21
Midazolam	13
Milbemycin Oxime	13
Milbemycin Oxime + Praziquantel	130
Milbemycin Oxime + Spinosad	35
Mirtazapine	52
Molidustat	11
Monensin	13
Moxidectin	383
Moxidectin + Pyrantel Pamoate + Sarolaner	26
Nitenpyram	52
Oclacitinib	128
Omeprazole	44
Ondansetron	11
Phenobarbital	11
Pimobendan	28
Praziquantel	21
Praziquantel + Pyrantel Pamoate	12
Prednisolone	16
Prednisone	49
Propofol	24
Pyrantel Pamoate	11
Pyrantel Pamoate + Sarolaner	813
Robenacoxib	27
Sarolaner	60
Sarolaner + Selamectin	88
Selamectin	43
Sodium Chloride	16
Sucralfate	21
Tigilanol tiglate	15
Trazodone	22
Trilostane	26
Velagliflozin	99

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 4,915 reports of the month.

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

Lack of efficacy (ectoparasite) - flea[the product did not have the expected effect: fleas]12.3%605 reports
Vomiting11.6%570 reports
Lethargy[unusually tired or inactive]8.1%396 reports
Diarrhoea[diarrhea]6.3%310 reports
Lack of efficacy (endoparasite) - heartworm[the product did not have the expected effect: heartworm]6.1%302 reports
Lack of efficacy - NOS[the product did not have the expected effect]6.1%302 reports
Medication error NOS[a mistake in giving the product, type not specified]5.7%278 reports
Lack of efficacy (endoparasite) - hookworm[the product did not have the expected effect: hookworms]5.6%274 reports
Seizure NOS[seizure, type not specified]4.2%206 reports
Lack of efficacy (ectoparasite) - tick NOS[the product did not have the expected effect: ticks]3.7%180 reports
Emesis (multiple)[vomiting more than once]3.6%179 reports
Lack of efficacy (bacteria) - Anaplasma[the product did not have the expected effect: Anaplasma bacteria]3.5%172 reports
Lack of efficacy (bacteria) - Borrelia[the product did not have the expected effect: Borrelia (Lyme disease bacteria)]3.3%161 reports
Not eating3.1%150 reports

Show the next 1 signs

Intentional misuse[use that was knowingly different from the label]2.8%136 reports

Ingredients, all combinations

The list has every active ingredient with 10 or more reports received in June 2026, in order of name. It has 79 ingredients.

Show the 79 ingredients

The same month in other years

Cite this page

Pet Drug Reports. June 2026: adverse event reports for animal drugs. https://petdrugreports.com/month/2026-06/ 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 June 2026 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?: "Lack of efficacy (ectoparasite) - flea" is in 605 reports of the 4,915 reports of June 2026 (12.3%).