There is some evidence to suggest that boron may improve blood flow to the penis and increase nitric oxide production, both of which are important for maintaining healthy erections. One study found that men who supplemented with boron had a significant improvement in erectile function compared to a placebo group.
Pairing Tongkat Ali with the Bathmate Hydromax Pump has had great success for many users who have reported increased penis size and girth when used in combination.
It's a common belief that penis size doesn't matter to women and that they are more concerned with other factors, such as a man's personality or sense of humor. However, recent studies have shown that penis size can actually be quite important to some women.
