March 2024: 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 6,462 adverse event reports for animal drugs in March 2024. It received 4,650 reports in March 2023. The average of the 12 months before March 2024 is 5,669 reports for each month.

Of the 6,462 reports, 70.8% are about dogs, 16.4% 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, Sep 2022 to Sep 2024. The column with the outline is March 2024.

Reports by species

Dog70.8%4,575
Cat16.4%1,059
Horse1.1%70
Other species, or species not given11.7%758

Drug pages with reports received in March 2024

The table has every drug page with 10 or more reports that FDA received in March 2024, 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 March 2024, in order of name
Active ingredients	Reports received in March 2024
(S) - methoprene	12
Acepromazine Maleate	13
Afoxolaner	300
Afoxolaner + Moxidectin + Pyrantel Pamoate	221
Alfaxalone	19
Amantadine	11
Amoxicillin	11
Amoxicillin + Clavulanate Potassium	19
Amoxicillin Trihydrate + Clavulanate Potassium	26
Atipamezole Hydrochloride	23
Bedinvetmab	868
Bexagliflozin	125
Bupivacaine	12
Buprenorphine	90
Butorphanol Tartrate	75
Capromorelin	27
Carprofen	188
Cefovecin sodium	71
Cefpodoxime proxetil	12
Ceftiofur Crystalline Free Acid	10
Cyclosporine	38
Dexamethasone	13
Dexmedetomidine	32
Dexmedetomidine hydrochloride	32
Diphenhydramine	21
Doramectin	11
Doxycycline	29
Emodepside + Praziquantel	24
Enalapril Maleate	17
Enrofloxacin	30
Eprinomectin + Esafoxolaner + Praziquantel	84
Estriol	10
Famotidine	14
Febantel + Praziquantel + Pyrantel Pamoate	42
Firocoxib	15
Florfenicol + Mometasone furoate + Terbinafine	45
Fluoxetine hydrochloride	21
Fluralaner	543
Fluralaner + Moxidectin	36
Frunevetmab	231
Furosemide	13
Gabapentin	216
Grapiprant	62
Hydromorphone	10
Imidacloprid	47
Imidacloprid + Moxidectin	60
Insulin	69
Isoflurane	49
Ivermectin	29
Ivermectin + Pyrantel Pamoate	498
Ketamine Hydrochloride	34
Ketoconazole	16
Levothyroxine sodium	24
Lotilaner	115
Lufenuron + Milbemycin Oxime	46
Lufenuron + Milbemycin Oxime + Praziquantel	72
Maropitant	137
Melarsomine Dihydrochloride	75
Meloxicam	49
Methimazole	14
Methylprednisolone Acetate	12
Metronidazole	32
Midazolam	20
Milbemycin Oxime	36
Milbemycin Oxime + Praziquantel	253
Milbemycin Oxime + Spinosad	91
Mirtazapine	23
Molidustat	26
Moxidectin	359
Moxidectin + Pyrantel Pamoate + Sarolaner	17
Nitenpyram	72
Oclacitinib	190
Omeprazole	44
Ondansetron	12
Phenylpropanolamine hydrochloride	15
Pimobendan	80
Polysulfated Glycosaminoglycan	29
Praziquantel	34
Praziquantel + Pyrantel Pamoate	15
Prednisolone	34
Prednisone	79
Propofol	41
Pyrantel Pamoate	15
Pyrantel Pamoate + Sarolaner	850
Robenacoxib	22
Sarolaner	94
Sarolaner + Selamectin	103
Selamectin	56
Sodium Chloride	66
Sucralfate	15
Tigilanol tiglate	33
Tiletamine Hydrochloride + Zolazepam Hydrochloride	11
Tramadol	19
Trazodone	31
Trilostane	50
Tulathromycin	10
Velagliflozin	144

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 6,462 reports of the month.

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

Vomiting12.1%779 reports
Lethargy[unusually tired or inactive]8.4%540 reports
Lack of efficacy (endoparasite) - heartworm[the product did not have the expected effect: heartworm]7.5%484 reports
Diarrhoea[diarrhea]6.6%424 reports
Lack of efficacy - NOS[the product did not have the expected effect]5.5%355 reports
Lack of efficacy (ectoparasite) - flea[the product did not have the expected effect: fleas]4.6%297 reports
Lack of efficacy (endoparasite) - hookworm[the product did not have the expected effect: hookworms]4.1%266 reports
Seizure NOS[seizure, type not specified]4.1%263 reports
Lack of efficacy (endoparasite) - roundworm NOS[the product did not have the expected effect: roundworms]3.5%228 reports
Lack of efficacy (bacteria) - Borrelia[the product did not have the expected effect: Borrelia (Lyme disease bacteria)]3.4%218 reports
Death by euthanasia[the animal was euthanized]3.3%211 reports
Not eating3%191 reports
Death2.7%177 reports
Emesis (multiple)[vomiting more than once]2.6%168 reports

Show the next 1 signs

Anorexia[not eating]2.5%161 reports

Ingredients, all combinations

The list has every active ingredient with 10 or more reports received in March 2024, in order of name. It has 94 ingredients.

Show the 94 ingredients

The same month in other years

Cite this page

Pet Drug Reports. March 2024: adverse event reports for animal drugs. https://petdrugreports.com/month/2024-03/ 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 March 2024 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 779 reports of the 6,462 reports of March 2024 (12.1%).