Q. Our dog is beginning to have seizures could the fled and tick pill be causing these or the heart worm med.
DAVID ELBEZE, DVM, MRCVS
A. Heartworm meds can potentially cause seizures but it's very rare and usually caused by an overdose or if the dog has the genetic defect called MDR1 (can be diagnosed with a blood test). If he had more than 2 seizures in a short period he needs to see a vet, some diseases need to be ruled out (as well as drug toxicity), if nothing is found it's probably epilepsy (can be treated and managed with anti seizure drugs).