Some vitamins and supplements should be taken by men with a hope that they could get strong erections most of the time. Calcium enhances blood supply and raises testosterone that is very essential for achieving good erection. Vitamin B12 helps to promote proper functioning of the nerve tissue and boosts energy levels that would improve sexual performance. Zinc as sharpens the testosterone level and sperm quality, hence its importance in male sexual health. L-arginine is an amino acid that works in relation to circulation of blood to the erectile organ thus enhancing charges of erection. Adam Desire is a natural supplement for the male sexual health and Maca Root helpful in increasing the libido level, energy and stamina. It is always wise to see your doctor before taking any new supplements.