Hi, I am 31, Male. I have been suffering from eretile dysfunction. Upon consultation with doctor, he found i have low Testoteron. He gave me herbal supplement TESTOMAN and advised to defer Testo Replacement therapy and asked me to take cialis 20 mg twice a week. initially, it was doing well. for the last one week, even though with cialis, it is not effecting well. what should i do. it is creating lot of stress in our married life