Bring back the spark in your relationship by increasing your libido. Make your partner always satisfied in bed. Perhaps, making love is one of the bonds couples have, so never lose that bond by improving your sex drive. Increase libido now! The investigations clearly show that Male impotence could be caused by many mental factors (emotional tension or unhappiness being on the first place), likewise through diabetes, cardio conditions, brain as well as back illnesses, and so on. L-Arginine is a non necessary amino acid and is essential for regular performing of the pituitary gland.