well i am only 19 and i suffer a bit from low libido and erectile dysfunction. i havent seen a doctor about this but i plan on seeing my natural path very soon. i want to try a vitamin supplement from gnc or something but im not sure which one to get. can someone suggest the best one from this selection Men's Vitality - Men's Health - GNC also i dont want a chemical one i like natural things so the more natural the better. Applied Nutrition® Libido-Max™ - IRWIN NATURALS - GNC here is one i had my eye on but i know little on the subject so if someone could help me out that would be great. also if anyone need smore info to help me out i will gladly share.. thanks!!!