Flea Medicine Causing Seizures in Dogs

Some dogs are sensitive to flea medicines. Certain ingredients can cause seizures in dogs. To avoid seizures caused by these treatments, review alternative flea prevention and treatment options with a veterinarian and groomer.

  1. Causes

    • Ivermectin is the primary chemical culprit in flea control products causing seizures in dogs. To avoid seizures, select a flea medicine that does not include ivermectin.

    Warning

    • Dogs already prone to seizures due to hypoglycemia or sensitivity to other chemicals are at risk for seizures caused by ingredients in flea products. Collies are also more sensitive to ivermectin than other breeds.

    Prevention/Solution

    • Limit your pet's exposure to lawn chemicals and household cleaning products containing chemicals. To control fleas, use an all-natural flea repellent on the dog after discussing the specific product with a licensed veterinarian.

    Types

    • There are secondary chemicals in some flea medicines that can cause harm and possibly seizures in a dog. These are pyriproxyfen, midacloprid, methoprene, pyriproxyfen, fipronil and permethrin. These chemicals may also harm humans upon ingestion.

    Other Causes of Seizures in Dogs

    • About one percent of all canines experience a seizure problem. These seizures may be the result of genetic predisposition, health conditions and environmental irritants, such as the flea medicine. Some dogs may experience seizures due to multiple triggers, so take your affected dog to the vet after a seizure has occurred.