My DS is 2.5 and on certain days gets a mild/moderate hayfever. The main symptom is his runny nose and itchy face. I've never given him anything but now he needs something as really starting to bother him. I have 3 options apparently; Piriton (chorophenamine), Benadryl (cetiridine) or Loratidine. The pharmacist said Piriton is most drowsy, then the Benadryl and then the other one. I've heard from a close friend that a GP said not to use Piriton because there have been some concerning case studies. Anyone got any views before i buy?