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 17, 1997 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Death | Died |
| Apr 17, 1997 | Sheep | Sheep (other) | Tilmicosin Phosphate | Death | Died |
| Apr 9, 1997 | Sheep | Sheep (unknown) | Sulfadiazine, Trimethoprim | Death | Died |
| Apr 2, 1997 | Sheep | Cheviot (unspecified) | Tilmicosin Phosphate | Ataxia; Apnoea | Died |
| Mar 11, 1997 | Sheep | Suffolk sheep | Tilmicosin Phosphate | Convulsion; Death | Died |
| Feb 17, 1997 | Sheep | Crossbred Ovine/sheep | Xylazine | INEFFECTIVE, ANESTHESIA | — |
| Jan 17, 1997 | Sheep | Hampshire Down | Monensin | Death; Depression; Anorexia | Died |
| Dec 19, 1996 | Sheep | Sheep (unknown) | Florfenicol | Anaphylaxis; Death | Died |
| Dec 9, 1996 | Sheep | Crossbred Ovine/sheep | Selenium, Vitamin E | Blindness; Death; Anaphylaxis; Ataxia; Trembling; Dyspnoea | Died |
| Oct 30, 1996 | Sheep | Suffolk sheep | Monensin | Death; PR-MUSCLE(S), LESION(S); Muscle stiffness; Trembling; Lameness | Died |
| Oct 10, 1996 | Sheep | Sheep (unknown) | Oxfendazole | Recumbency | — |
| Oct 3, 1996 | Sheep | Sheep (unknown) | Monensin | Staggering; Death; Haematuria | Died |
| Oct 2, 1996 | Sheep | Sheep (unknown) | Levamisole Hydrochloride | INEFFECTIVE, STRONGYLES | Died |
| Oct 1, 1996 | Sheep | Sheep (unknown) | Flunixin Meglumine | Collapse (see also 'Cardio-vascular' and 'Systemic disorders'); Death | — |
| Aug 28, 1996 | Sheep | Sheep (unknown) | Levamisole Phosphate | Death | Died |
| Aug 1, 1996 | Sheep | Crossbred Ovine/sheep | Oxfendazole | INEFFECTIVE, STRONGYLES | — |
| Aug 1, 1996 | Sheep | Crossbred Ovine/sheep | Oxfendazole | Lack of efficacy (endoparasite) - tapeworm; Death | Died |
| Jul 17, 1996 | Sheep | Sheep (unknown) | Levamisole Phosphate | Ataxia | Died |
| Jun 28, 1996 | Sheep | Sheep (other) | Albendazole | Death | Died |
| Jun 14, 1996 | Sheep | Crossbred Ovine/sheep | Monensin | Death; TOXICITY | Died |
| Jun 4, 1996 | Sheep | Sheep (other) | Follicle Stimulating Hormone | INEFFECTIVE, SUPEROVULATION | — |
| Apr 16, 1996 | Sheep | Suffolk sheep | Tilmicosin Phosphate | Dyspnoea; Collapse (see also 'Cardio-vascular' and 'Systemic disorders'); Wea... | Died |
| Dec 28, 1995 | Sheep | Crossbred Ovine/sheep | Levamisole Hydrochloride | Residues in meat/offal | — |
| Oct 4, 1995 | Sheep | Sheep (unknown) | Ivermectin | Blindness | — |
| Aug 18, 1995 | Sheep | Southdown | Levamisole Phosphate | Hypersalivation; Recumbency; Death | Died |
| Jul 31, 1995 | Sheep | Sheep (other) | Tilmicosin Phosphate | Anaphylaxis; Death | Died |
| Jun 29, 1995 | Sheep | Sheep (unknown) | Clorsulon, Ivermectin | Trembling; Paresis; Death; Recumbency; Fever; Proprioception abnormality; Dep... | Died |
| Apr 19, 1995 | Sheep | Hampshire Down | Selenium, Vitamin E | Death; Ataxia; Dyspnoea; Depression | Died |
| Mar 30, 1995 | Sheep | Crossbred Ovine/sheep | Selenium, Vitamin E | Death | Died |
| Mar 27, 1995 | Sheep | Sheep (unknown) | Amikacin | Tenesmus; Anorexia; Pain NOS | — |
| Jan 30, 1995 | Sheep | Columbia | Albendazole | Death; Ataxia; Dyspnoea; Behavioural disorder NOS | Died |
| Dec 22, 1994 | Sheep | Sheep (unknown) | Penicillin G Procaine | Anaphylaxis; Death | Died |
| Dec 22, 1994 | Sheep | Sheep (unknown) | Penicillin G Procaine | Convulsion | — |
| Dec 22, 1994 | Sheep | Sheep (unknown) | Penicillin G Procaine | Death | Died |
| Nov 23, 1994 | Sheep | Crossbred Ovine/sheep | Fenbendazole | Pharyngeal oedema; Death | Died |
| Jul 7, 1994 | Sheep | Suffolk sheep | Levamisole Hydrochloride | Death | Died |
| Jun 8, 1994 | Sheep | Columbia | Monensin | Death | Died |
| Jun 1, 1994 | Sheep | Mixed (Sheep) | Monensin | Abortion; Death | Died |
| May 2, 1994 | Sheep | Sheep (unknown) | Tilmicosin Phosphate | Death | Died |
| Oct 25, 1993 | Sheep | Sheep (unknown) | Oxytetracycline Hydrochloride | Hind limb paralysis; Death; Injection site pain | Died |
| Aug 13, 1993 | Sheep | Sheep (unknown) | Monensin | Death | Died |
| Aug 10, 1993 | Sheep | Sheep (unknown) | Monensin | Death | Died |
| Aug 4, 1993 | Sheep | Sheep (unknown) | Levamisole Hydrochloride | INEFFECTIVE, WORMS NOS; Diarrhoea | — |
| Jul 14, 1993 | Sheep | Sheep (other) | Levamisole Hydrochloride | PR-HEART, LESION(S); PR-LUNG(S), LESION(S); Ataxia; Trembling; Death | Died |
| Mar 24, 1993 | Sheep | Sheep (unknown) | Ivermectin | Lack of efficacy - NOS | — |
| Jan 25, 1993 | Sheep | Crossbred Ovine/sheep | Levamisole Hydrochloride | Death | Died |
| Oct 19, 1992 | Sheep | Suffolk sheep | Monensin | Death | Died |
| Aug 31, 1992 | Sheep | Suffolk sheep | Monensin | Death | Died |
| Aug 31, 1992 | Sheep | Sheep (unknown) | Monensin | Death | Died |
| Oct 17, 1991 | Sheep | Sheep (other) | Levamisole Hydrochloride | Central nervous system disorder NOS; Death | 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.