Hi having issues with mainting a good erection. i take hbp meds and controlled. can i take men's meca man or any vitiams to help erection & libido?

Proven vs unproven: . Generally any drug, herb, treatment, or procedure that stands up to rigorous scientific scrutiny is included in modern medicine. The problem is that many alternative practices, herbs, vitamins, etc do not stand up to scientific scrutiny and cannot be shown to work. They therefore remain "alternative". Be careful and watch your wallet. See a urologist to make sure there is not a medical prob