My DS (19 mnths) was prescribed cetirizine by his allergy consultant in September who said, although it wasn't liscenced for children under 2 yrs, it was perfectly safe for him to have at 17mnths and would cure his allergy problems. Just got his repeat filled today and I noticed it now says it is unsuitable for children under 6yrs. Does any one know why this is and sould I stop giving it to my ds?