Hi I have recently been advised by a GP to use nasonex as an ongoing preventative for allergy/hayfever symptoms, instead of using products such as telfast when the symptoms are evident. I am a 52 year old adult male. My 14 year old daughter has also been given the same advice. I have read quite a few disturbing online reviews of people claiming to have used nasonex, even for very short periods like a single use, and they have encountered symptoms such as headaches, loss of taste, vision problems etc, ever since that have been very difficult to recover from. I know that the internet contains a lot of useless and incorrect information; however it s difficult to ignore some of these comments that are written, for fear they are true. Are these reviews more likely to be untrue or is there a real possibility of these type of symptoms occurring from using steroid products such as nasonex.