Browse Pet Safety Reports
1,068 FDA adverse event reports for pets.
FDA Veterinary Adverse Event Database
Browse 1,068 adverse event reports collected by the FDA's Center for Veterinary Medicine. Each report includes the animal species, breed, drug or product involved, observed reactions, and outcome. Reports flagged as "serious" involve death, life-threatening conditions, or hospitalization. Use the filters to narrow results by species, outcome severity, or keyword. Note that a higher number of reports does not necessarily indicate a less safe product — widely prescribed drugs naturally accumulate more reports.
Pet Adverse Event Reports
Browse 1,068 FDA veterinary adverse event reports for Sheep.
| Date | Species | Breed | Drug | Reaction | Outcome |
|---|---|---|---|---|---|
| Aug 3, 2012 | Sheep | Sheep (other) | Ivermectin | INEFFECTIVE, PARASITE(S) NOS | Died |
| Aug 3, 2012 | Sheep | Sheep (other) | Ivermectin | INEFFECTIVE, PARASITE(S) NOS; Death; Loss of condition; Facial oedema | Died |
| Aug 1, 2012 | Sheep | Sheep (unknown) | Decoquinate | Lack of efficacy (protozoa) - Coccidia; Overdose | Ongoing |
| Jul 3, 2012 | Sheep | Sheep (unknown) | Albendazole | Alopecia general; Unexplained death; Unthrifty | Recovered with Sequela; Died |
| Jun 30, 2012 | Sheep | Sheep (unknown) | Florfenicol | Recumbency; Lack of efficacy (bacteria) - NOS; Depression | Died |
| Jun 27, 2012 | Sheep | Sheep (unknown), Sheep (unk... | Pyrantel Pamoate ( Pyrantel Embonate) | INEFFECTIVE, PARASITE(S) NOS | Outcome Unknown |
| Jun 20, 2012 | Sheep | Sheep (unknown) | Ivermectin | Convulsion; Recumbency; Shock; Anaphylaxis; Death | Died |
| May 30, 2012 | Sheep | Sheep (unknown) | Albendazole | Diarrhoea; Unexplained death | Died |
| May 29, 2012 | Sheep | Sheep (unknown) | Ivermectin | Anaemia NOS; Death; Malaise; Loose stool | Died |
| May 19, 2012 | Sheep | Sheep (unknown) | Ivermectin | Pneumonia; Death; Skin petechiae; Suspected infectious agent transmission; PR... | Died |
| May 11, 2012 | Sheep | Sheep (unknown) | Moxidectin | Twitching; Depression | — |
| May 9, 2012 | Sheep | Sheep (other) | Selenium, Vitamin E | Injection site alopecia | — |
| May 1, 2012 | Sheep | Sheep (unknown) | Lasalocid | Death; PR-HEART, LESION(S); PR-LUNG(S), EDEMA | Died |
| Apr 19, 2012 | Sheep | Southdown | Progesterone | Lack of efficacy - NOS; Hyperextension; INEFFECTIVE, ESTRUS INDUCTION | Outcome Unknown |
| Apr 8, 2012 | Sheep | Sheep (other) | Monensin Sodium | Diarrhoea; Recumbency; Death; Weakness; Other abnormal test result NOS; NT - ... | Died; Outcome Unknown |
| Apr 6, 2012 | Sheep | Sheep (other) | Florfenicol | Foam in the nose; Hypersalivation; Death | Died |
| Feb 4, 2012 | Sheep | Sheep (other) | Gamithromycin | Death | Died |
| Jan 1, 2012 | Sheep | Sheep (unknown) | Eprinomectin | Circling - neurological disorder (see also 'Behavioural disorders'); Hypersal... | Died |
| Jan 1, 2012 | Sheep | Crossbred Ovine/sheep | Zeranol | Rectal prolapse; Vaginal prolapse; Death; DEATH-SLAUGHTERED | Died |
| Nov 7, 2011 | Sheep | Sheep (unknown) | Ivermectin | Anaemia NOS; Nasal discharge; Death; INEFFECTIVE, PARASITE(S) NOS | Died |
| Nov 3, 2011 | Sheep | Sheep (unknown) | Zilpaterol | No sign | — |
| Oct 13, 2011 | Sheep | Sheep (unknown) | Albendazole | Lack of efficacy (endoparasite) - trematode; Death | Died |
| Sep 30, 2011 | Sheep | Sheep (other) | Monensin Sodium | Cardiac disorder NOS; Hepatomegaly; Renal disorder NOS; Pneumonia; Death; Sti... | Died |
| Aug 31, 2011 | Sheep | Katahdin | Ivermectin | INEFFECTIVE, STRONGYLES | Outcome Unknown |
| Aug 1, 2011 | Sheep | Sheep (unknown) | Moxidectin | Behavioural disorder NOS; INEFFECTIVE, PARASITE(S) NOS; Depression | — |
| Jul 29, 2011 | Sheep | Crossbred Ovine/sheep | Progesterone | Lack of efficacy - NOS | — |
| Jul 20, 2011 | Sheep | Southdown | Moxidectin | Pain NOS; Fever; Ataxia; Hyperaesthesia; Hypoproteinaemia; Elevated aspartate... | — |
| Jul 12, 2011 | Sheep | Rambouillet | Oxytetracycline; Flunixin | Nasal discharge; Hypersalivation; Death; Anaphylaxis; Distress; Pulmonary oed... | Died |
| Jul 11, 2011 | Sheep | Sheep (unknown) | Albendazole | Lack of efficacy (endoparasite) - tapeworm; Lack of efficacy (protozoa) - Coc... | Died; Outcome Unknown |
| Jul 1, 2011 | Sheep | Mixed (Sheep) | Oxfendazole | INEFFECTIVE, STRONGYLES; Anaemia NOS; Death | Died |
| May 26, 2011 | Sheep | Sheep (other) | Progesterone | Lack of efficacy - NOS | — |
| May 25, 2011 | Sheep | Sheep (unknown) | Ivermectin | Unclassifiable adverse event; Epistaxis; Nasal discharge; Dermatitis; Facial ... | Died |
| May 16, 2011 | Sheep | Sheep (other) | Albendazole | Accidental exposure; Diarrhoea | — |
| May 15, 2011 | Sheep | Sheep (unknown) | Albendazole | Nasal discharge; Anorexia; Depression; Fever; Respiratory tract disorder NOS;... | Died |
| May 6, 2011 | Sheep | Sheep (unknown) | Tulathromycin | Head pressing; Hypersalivation; Mydriasis | — |
| May 4, 2011 | Sheep | Sheep (other) | Albendazole | Accidental exposure; Diarrhoea; Anorexia; Death | — |
| May 2, 2011 | Sheep | Sheep (unknown) | Amprolium | Mucous stool; Vocalisation | — |
| Apr 11, 2011 | Sheep | Dorset Down | Progesterone | Lack of efficacy - NOS; Product Defect, General | — |
| Mar 28, 2011 | Sheep | Sheep (other) | Tilmicosin Phosphate | Death | Died |
| Mar 16, 2011 | Sheep | Sheep (other) | Sevoflurane | Tachycardia; Tachypnoea; Pain NOS; Malaise; Pallor; Depression; Death by euth... | Died |
| Mar 4, 2011 | Sheep | Merino - fine wool | Ivermectin | Death | Died |
| Feb 17, 2011 | Sheep | Sheep (unknown) | Progesterone | INEFFECTIVE, ESTRUS SYNCHRONIZ; Female reproductive tract disorder NOS | — |
| Jan 19, 2011 | Sheep | Sheep (unknown) | Progesterone | INEFFECTIVE, ESTRUS SYNCHRONIZ; Potency, Low; Abnormal oestrus NOS | — |
| Jan 4, 2011 | Sheep | Sheep (unknown) | Oxytetracycline | Muscle stiffness | — |
| Jan 1, 2011 | Sheep | Sheep (unknown) | Moxidectin | Lack of efficacy (endoparasite) - tapeworm | — |
| Jan 1, 2011 | Sheep | Sheep (unknown) | Amprolium | Death | Died |
| Dec 22, 2010 | Sheep | Sheep (unknown) | Selenium, Vitamin E | Death | Died |
| Dec 16, 2010 | Sheep | Sheep (unknown) | Ivermectin | Lack of efficacy (ectoparasite) - mite NOS; Death | Died |
| Nov 18, 2010 | Sheep | Sheep (unknown) | Amprolium | Diarrhoea | — |
| Nov 11, 2010 | Sheep | Sheep (unknown) | Progesterone | INEFFECTIVE, ESTRUS SYNCHRONIZ | — |
Frequently Asked Questions
Contact your veterinarian immediately. If the reaction is severe — difficulty breathing, seizures, collapse, or severe swelling — seek emergency veterinary care right away. After your pet is stabilized, report the adverse event to the FDA through safetyreporting.hhs.gov or by calling 1-888-FDA-VETS (1-888-332-8387). Reporting helps the FDA identify safety issues that can lead to label changes or product recalls.
Dogs account for the majority of adverse event reports, followed by cats. This reflects both the larger pet population and wider range of medications for these species. Flea and tick products, pain medications (NSAIDs), and heartworm preventives are among the product categories with the highest report counts across all species.
Not necessarily. A drug used by millions of pets will have more reports in absolute numbers than a niche product, even if the actual rate of adverse events is lower. The FDA uses these reports as one of many tools to evaluate drug safety, looking for patterns and statistical signals rather than raw counts alone. Always consult your veterinarian before changing any medication.