That particular ingredient wasn't found to casue seizures in average women at all. It was an ingredient in popular over-the-counter appetite supresssants and it seemed that eating-disordered women were popping them like candy and THEY were the ones most likely to have seizures. Proper use of cold medications was not considered a danger but to be on the safe side, all medcines including that ingredient were pulled from store shelves. So it's not quite like the Tylenol/Cyanide scare. Better safe than sorry I suppose.
UKers may still have some old Lemsip or Chesty Cough on their shelves with that ingredient. It might be wise to look. Both products were reformulated over 6 years ago to include the same innefectual crap that's in Sudafed.