Dear Doctor, My son is now 4 years old and has been having, cold and flu very often for around 2 years. One of the paediatrician I took my son to, used to give him antibiotics every time (for almost a year), after getting FED up using antibiotics for so long, I took my son to another paediatrician, who declared it to be case of sinus. He recommended AVAMYS spray for use, twice daily. It has been eight months I ve been using it, and the results are very effective. My question now is how long do I ve to use it continuously for. Also I see that the rate of height growth has sort of decreased after using AVAMYS, is it a side-effect or is it not completely related to using AVAMYS. Thanks and Regards, Param