I am 46 years old. I am unmarried. For the past six months I am in a sexual relationship with one of my female friend. She actively engages me in sex but to my dismay I am unable to have a good erection. I try my best to get a good erection but by the time I wear the condom I loose erection / sometimes the moment I enter her vagina I loose erection. Then I tried having manforce tab. 25 mg. It worked .That day I could get erection. Then slowly I started increasing the dosage .when ever I had sex prior to that I took manforce 100 from then on I started enjoy ing sex .I felt better with every other encounter. Some times we engage in sex thrice a week on a regular basis. What I could find is I am getting good results using this wonder pill. What I would like to know is .is it fine if I take this medicine each time I have sex. Or do I need to get good treatment for my problem. I am suffering from Thyroid / and Bipolar disorder too and I am under medications too. please advice me.