question: Dear doctor, The last 3 times during intercourse with my wife I was not able to sustain the erection. I have a very low sperm count (~1 mn/ml) but never before faced the issue of not sustaining the erection. in order to boost sperm count i did take Co Q and another prescription medicine for ~2 months. And all these 3 instances have happened post taking the medicine only. Otherwise, during masturbation I do not face any problem. Any guidance will be a great help. Thanks