Simparica Tick and Flea medication - Causing Seizures in Dogs!!!

My 5 month old Husky all of a sudden started getting seizures after I gave him a Simparica tablet for the treatment of ticks and fleas. I am saddened that I did not do more research about this product! Bravecto, Nexguard and Simparica is apparently known for causing seizures in some dogs but why is it still available ?? Be cautious of these medications! I just had to spend thousands on vet consultations and blood test and it caused a lot of unnessasary trauma for my Husky and family!! The companies manufacturing these medications should be sued and forced to withdraw this horrible poison they knowingly sell to unsuspecting pet owners!