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My dog has severe, frequent seizures. How many are too many?

Updated On September 23rd, 2025

Pet's info: Dog | English Springer Spaniel | Male | neutered | 10 years and 5 months old

My 9yr old English springer has suffered with seizures since Feb 2016. In October he had 6 in a 24hr period. The vet increased his phenobarbital and provided anal diazepam, as it is regular for the seizures to be 5-9 mins long. Today he has had 12 seizures in the last 20hrs. the vet Has said to continue as we are and will look to increase the phenobarbital or possibly use a seperate medication alongside. However how many seizures are too many??

1 Answer

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on December 3rd, 2016

12 seizures within 20 hours is a large number of seizures. Also the length of the seizures at 5 to 9 minutes is extreme. This does certainly point to a serious problem in the brain and likely to a tumor. Make sure to take your dog to the vet on Monday to adjust the dosage/add other medications. If the seizures last longer than 5 minutes , use the diazepam your vet gave you and if the seizure does not stop with the diazepam, you need to take Murray to an out of hours vet or ER right away.

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