I know that doctors sometimes prescribe natural tablets, for example nootropicboost.com/ . These pills perfectly help with apathy, lethargy, lack of sleep and problems with attention and memory. As far as I know, these pills are often taken by students before exams and employees if there is stress at work. Also, I know that these pills are completely safe for health and don't cause addiction.
I`ve always been a person my friends used to ask about this or that product because I`m in the Internet all the time and usually know such things and I know something about ed drugs, so if you asked me like this: are there any generic ed drugs? I`d say there are and the best among them is Cenforce! Really good stuff, no doubt about it!