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 |
|---|---|---|---|---|---|
| Apr 21, 2003 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Death; Facial oedema | Died |
| Apr 14, 2003 | Sheep | Sheep (unknown) | Monensin | Residues in meat/offal | — |
| Apr 2, 2003 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Death; Lack of efficacy (bacteria) - NOS | Died |
| Apr 1, 2003 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Death | Died |
| Mar 31, 2003 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Death | Died |
| Mar 30, 2003 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Death | Died |
| Mar 28, 2003 | Sheep | Sheep (unknown) | Ivermectin | Renal disorder NOS; Death; Suspected infectious agent transmission; PR-KIDNEY... | Died |
| Mar 28, 2003 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Death | Died |
| Mar 26, 2003 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | PR-HEART, LESION(S); Death; PR-LUNG(S), LESION(S) | Died |
| Mar 23, 2003 | Sheep | Crossbred Ovine/sheep | Tilmicosin Phosphate | Death | Died |
| Mar 3, 2003 | Sheep | Sheep (other) | Tilmicosin Phosphate | Depression; Collapse (see also 'Cardio-vascular' and 'Systemic disorders'); R... | Died |
| Feb 20, 2003 | Sheep | Sheep (other) | Tilmicosin Phosphate | Death; Ataxia; Weakness; Depression | Died |
| Feb 10, 2003 | Sheep | Crossbred Ovine/sheep | Tilmicosin Phosphate | Death | Died |
| Feb 1, 2003 | Sheep | Sheep (other) | Tilmicosin Phosphate | Death; Depression | Died |
| Feb 1, 2003 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Death; Depression | Died |
| Jan 30, 2003 | Sheep | Crossbred Ovine/sheep | Doramectin | Trembling; Death; Depression | Died |
| Jan 29, 2003 | Sheep | Sheep (other) | Tilmicosin Phosphate | Ataxia; Death; Confusion | Died |
| Jan 24, 2003 | Sheep | Crossbred Ovine/sheep | Tilmicosin Phosphate | Death | — |
| Jan 15, 2003 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Infertility NOS; Infertility NOS; Torticollis; Perinatal mortality NOS | Died |
| Jan 1, 2003 | Sheep | Sheep (unknown) | Ivermectin | No sign | — |
| Jan 1, 2003 | Sheep | Sheep (unknown) | Ivermectin | No sign | Died |
| Jan 1, 2003 | Sheep | Sheep (unknown) | Ivermectin | Death; INEFFECTIVE, STOMACH WORM NOS | Died |
| Dec 13, 2002 | Sheep | Sheep (other) | Tilmicosin Phosphate | Death | Died |
| Nov 8, 2002 | Sheep | Suffolk sheep | Xylazine | INEFFECTIVE, EUTHANASIA | — |
| Oct 23, 2002 | Sheep | Sheep (other) | Tilmicosin Phosphate | Death | Died |
| Oct 1, 2002 | Sheep | Sheep (unknown) | Ivermectin | INEFFECTIVE, STRONGYLES | Died |
| Sep 23, 2002 | Sheep | Sheep (other) | Tilmicosin Phosphate | Death | Died |
| Sep 5, 2002 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Death | Died |
| Sep 1, 2002 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Infertility NOS | — |
| Aug 28, 2002 | Sheep | Sheep (other) | Tilmicosin Phosphate | Ataxia; Death | Died |
| Aug 23, 2002 | Sheep | Southdown | Albendazole | Death; INEFFECTIVE, PARASITE(S) NOS | Died |
| Aug 23, 2002 | Sheep | Sheep (other) | Tilmicosin Phosphate | Recumbency; Death | Died |
| Aug 15, 2002 | Sheep | Crossbred Ovine/sheep | Pyrantel Tartrate | Alopecia NOS | — |
| Aug 15, 2002 | Sheep | Crossbred Ovine/sheep | Pyrantel Pamoate | Weight loss; Alopecia NOS; INEFFECTIVE, PARASITE(S) NOS | — |
| Aug 15, 2002 | Sheep | Crossbred Ovine/sheep | Sulfadimethoxine | Alopecia NOS | — |
| Aug 1, 2002 | Sheep | Southdown | Albendazole | DEATH-TREATMENT FAILURE; INEFFECTIVE, WORMS NOS | Died |
| Jul 25, 2002 | Sheep | Sheep (unknown) | Pentobarbital, Phenytoin | INEFFECTIVE, EUTHANASIA | Died |
| Jul 12, 2002 | Sheep | Sheep (other) | Tilmicosin Phosphate | PR-HEART, LESION(S); Twitching; Pulmonary congestion; Death | Died |
| Jul 7, 2002 | Sheep | Sheep (other) | Tilmicosin Phosphate | Shock; Anaphylaxis; Death | Died |
| Jun 16, 2002 | Sheep | Crossbred Ovine/sheep | Ceftiofur Hydrochloride | Hypersalivation; Anaphylaxis; Ataxia; Trembling; Polyuria; Fever | — |
| May 27, 2002 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Product label issues; Ataxia; Spasm; Death | Died |
| May 15, 2002 | Sheep | Suffolk sheep | Monensin | Dyspnoea; Fever; Cervical ventroflexion; Death; Muscle stiffness; PR-MUSCLE(S... | Died |
| May 1, 2002 | Sheep | Sheep (other) | Tilmicosin Phosphate | Collapse (see also 'Cardio-vascular' and 'Systemic disorders'); Death | Died |
| Apr 5, 2002 | Sheep | Hampshire Down | Tilmicosin Phosphate | Dyspnoea; Death | Died |
| Apr 5, 2002 | Sheep | Hampshire Down | Tilmicosin Phosphate | Dyspnoea; Death | Died |
| Apr 4, 2002 | Sheep | Crossbred Ovine/sheep | Monensin | Accidental exposure; Inappropriate preparation of medication; Joint pain; PR-... | Died |
| Mar 26, 2002 | Sheep | Sheep (unknown) | Clorsulon, Ivermectin | Blindness; Ataxia | — |
| Mar 25, 2002 | Sheep | Crossbred Ovine/sheep | Oxytetracycline Hydrochloride | Diarrhoea | — |
| Mar 21, 2002 | Sheep | Sheep (other) | Tilmicosin Phosphate | Stupor; Loss of consciousness; Death | Died |
| Mar 20, 2002 | Sheep | Cheviot (unspecified) | Monensin | Accidental exposure; Diarrhoea; Death; Anorexia | Died |
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.