Hi, Lately I have realized that my sexual desires is reducing and I was going soft in the middle of the act. I am diabetic I am on diet and exercising frequently. I am having my blood sugar levels under control. I contacted a neurologist and advised me to take neurobin forte and tazzle. That hasn t helped a lot. Sometimes I am able to reach climax and sometimes I don t.now it it s getting to me and losing patience. Now along with Tazzle I m on Virilex and Total nano leo. I was to know how long should I take that course? Can a doctor help me out here on facing this and coming out of this before it gets worse. Thank you, JR