Animal & veterinary · openFDA

Animal drug adverse event reports

Reports of adverse events in animals given veterinary drugs, by species, drug and reaction. 1,378,854 records; openFDA updated it 2026-11-09. About this dataset

110 records match “testosterone”

Most reported reactions
  • Death27
  • Vaginal prolapse19
  • Implant, Abnormal14
  • Rectal prolapse14
  • Underfilling, Package10
  • Increased sexual interest7
  • Mammary gland oedema7
  • Mammary hyperplasia7
  • MSK

    Dog · Reactions: Appetite loss, Wobbliness, Unable to walk +1

    VeterinarianSerious
  • MSK

    Cattle · Reactions: Death, Cough, Anorexia +4

    VeterinarianSerious
  • MSK

    Cattle · Reactions: Device Defective NOS, INEFFECTIVE, WEIGHT INC, Implant, Abnormal

    Animal Owner
  • MSK

    Dog · Reactions: Weight loss, Elevated creatinine, Elevated symmetrical dimethylarginine (SDMA) +3

    Veterinarian
  • MSK

    Cattle · Reactions: Mammary gland enlargement, Device Defective NOS, Implant, Abnormal +12

    Animal OwnerSerious
  • MSK

    Dog · Reactions: Not eating, Lethargy (see also Central nervous system depression in Neurological), Haematochezia +2

    Animal Owner
  • MSK

    Human · Reactions: Taste alteration, Accidental exposure, Incorrect route of drug administration

    Patient
  • MSK

    Cattle · Reactions: Rectal prolapse

    Animal Owner
  • MSK

    Cattle · Reactions: Lack of efficacy - NOS, Death

    VeterinarianSerious
  • MSK

    Cattle · Reactions: Lack of efficacy - NOS, Death

    VeterinarianSerious
  • MSK

    Reactions: Tablets, Abnormal

    Veterinarian
  • MSK

    Cattle · Reactions: Mammary gland disorder NOS

    Animal Owner
  • MSK

    Cattle · Reactions: Increased sexual interest, Injection site abscess, INEFFECTIVE, ESTRUS SUPPRESSIO +1

    Veterinarian
  • MSK

    Dog · Reactions: Lack of efficacy (endoparasite) - NOS

    Other
  • MSK

    Cattle · Reactions: Lack of efficacy - NOS, Rectal prolapse, Vaginal prolapse

    OtherSerious
  • MSK

    Cattle · Reactions: Lethargy (see also Central nervous system depression in 'Neurological')

    Animal Owner
  • MSK

    Cattle · Reactions: Mammary hyperplasia

    Veterinarian
  • MSK

    Reactions: Product problem, Implant, Abnormal

    Other
  • MSK

    Cattle · Reactions: Implant site bleeding, Death

    OtherSerious
  • MSK

    Cattle · Reactions: Vaginal prolapse, Death, Implant site abscess

    OtherSerious
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How to read this: Each report says someone told FDA an event happened while a product was used. A report does not show the product caused it, and counts rise and fall with how many people report. Data from openFDA, FDA's public API. FDA says not to rely on it to make decisions about medical care and to treat every result as unvalidated; confirm against FDA's own record and the product labeling. Not medical or legal advice.