July 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 2 Oct 2026. The data have the reports that FDA received through 26 Jun 2026.

FDA received 5,633 adverse event reports for animal drugs in July 2023. It received 5,140 reports in July 2022. The average of the 12 months before July 2023 is 5,171 reports for each month.

Of the 5,633 reports, 69% are about dogs, 18.1% 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, Jan 2022 to Jan 2024. The column with the outline is July 2023.

Reports by species

Dog69%3,889
Cat18.1%1,018
Horse1.1%64
Other species, or species not given11.8%662

Drug pages with reports received in July 2023

The table has every drug page with 10 or more reports that FDA received in July 2023, in order of name. No count decides which drug is in the table. The table has 97 drug pages.

Show the 97 drug pages

Drug pages with 10 or more reports received in July 2023, in order of name
Active ingredients	Reports received in July 2023
(S) - methoprene	29
Acepromazine Maleate	16
Afoxolaner	363
Alfaxalone	18
Amoxicillin	10
Amoxicillin + Clavulanate Potassium	11
Amoxicillin Trihydrate + Clavulanate Potassium	14
Ampicillin Sodium	10
Atipamezole Hydrochloride	26
Bexagliflozin	92
Bupivacaine	18
Buprenorphine	117
Butorphanol Tartrate	81
Capromorelin	29
Carprofen	73
Cefovecin sodium	73
Cefpodoxime proxetil	16
Ceftiofur Crystalline Free Acid	11
Clotrimazole + Gentamicin	13
Cyclosporine	55
Deracoxib	17
Dexamethasone	16
Dexamethasone Sodium Phosphate	13
Dexmedetomidine	39
Dexmedetomidine hydrochloride	33
Diphenhydramine	26
Doramectin	11
Doxycycline	47
Emodepside + Praziquantel	22
Enrofloxacin	23
Eprinomectin + Esafoxolaner + Praziquantel	66
Estriol	10
Famotidine	32
Febantel + Praziquantel + Pyrantel Pamoate	30
Fenbendazole	16
Florfenicol + Mometasone furoate + Terbinafine	70
Fluralaner	650
Fluralaner + Moxidectin	68
Frunevetmab	185
Furosemide	11
Gabapentin	91
Gentamicin Sulfate + Hydrocortisone aceponate + Miconazole Nitrate	14
Grapiprant	39
Hydromorphone	26
Imidacloprid	82
Imidacloprid + Moxidectin	73
Insulin	57
Isoflurane	46
Ivermectin	24
Ivermectin + Praziquantel	10
Ivermectin + Praziquantel + Pyrantel Pamoate	10
Ivermectin + Pyrantel Pamoate	531
Ketamine Hydrochloride	39
Ketoconazole	15
Levothyroxine sodium	15
Lotilaner	143
Lufenuron + Milbemycin Oxime	47
Lufenuron + Milbemycin Oxime + Praziquantel	60
Maropitant	134
Melarsomine Dihydrochloride	69
Meloxicam	37
Metoclopramide	11
Metronidazole	34
Midazolam	34
Milbemycin Oxime	31
Milbemycin Oxime + Praziquantel	244
Milbemycin Oxime + Spinosad	102
Mirtazapine	10
Monensin	11
Moxidectin	320
Moxidectin + Pyrantel Pamoate + Sarolaner	13
Nitenpyram	210
Oclacitinib	150
Omeprazole	30
Ondansetron	16
Orbifloxacin	10
Phenylpropanolamine hydrochloride	10
Pimobendan	55
Polysulfated Glycosaminoglycan	38
Praziquantel	25
Praziquantel + Pyrantel Pamoate	17
Prednisolone	31
Prednisone	62
Propofol	44
Pyrantel Pamoate	16
Pyrantel Pamoate + Sarolaner	961
Robenacoxib	40
Sarolaner	103
Sarolaner + Selamectin	144
Selamectin	89
Sodium Chloride	50
Spinosad	16
Sucralfate	11
Tigilanol tiglate	41
Trazodone	24
Trilostane	65
Tulathromycin	21

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 5,633 reports of the month.

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

Vomiting14.7%827 reports
Lack of efficacy (ectoparasite) - flea[the product did not have the expected effect: fleas]9.1%513 reports
Lack of efficacy (endoparasite) - heartworm[the product did not have the expected effect: heartworm]8.7%491 reports
Lethargy[unusually tired or inactive]8%451 reports
Lack of efficacy (ectoparasite) - tick NOS[the product did not have the expected effect: ticks]7%395 reports
Diarrhoea[diarrhea]6.6%372 reports
Lack of efficacy (endoparasite) - hookworm[the product did not have the expected effect: hookworms]5.4%304 reports
Seizure NOS[seizure, type not specified]3.7%208 reports
Lack of efficacy (bacteria) - Borrelia[the product did not have the expected effect: Borrelia (Lyme disease bacteria)]3.5%198 reports
Not eating3.4%193 reports
Death2.7%151 reports
Behavioural disorder NOS[behaviour change, type not specified]2.3%130 reports
Ataxia[unsteady, uncoordinated movement]2.2%124 reports
Panting2.2%123 reports

Show the next 1 signs

Lack of efficacy - NOS[the product did not have the expected effect]2.2%122 reports

Ingredients, all combinations

The list has every active ingredient with 10 or more reports received in July 2023, in order of name. It has 94 ingredients.

Show the 94 ingredients

The same month in other years

Cite this page

Pet Drug Reports. July 2023: adverse event reports for animal drugs. https://petdrugreports.com/month/2023-07/ 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 July 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 827 reports of the 5,633 reports of July 2023 (14.7%).