I just finished 5 yrs of allergy shots and no obvious improvement! Will get retested probably in a few months. There was blood work improvement - lower IGE scores etc. We had a horrible oak pollen season here this year because we never had a frost and my asthma was off the charts and I am not fully recovered yet. I can truly say at this point there is no guaranteed rhyme or reason to the mucus production. Some times I have what I call a "storm" which causes massive coughing mucus and nose blowing then it stops after about an hour. Other times it's all day long. Night thank God is quiet.