Viatropin he science behind it is simple - we already know that the penis can grow naturally because we have already seen it do just that during puberty, so why not use that fact to your advantage? Well that's exactly what natural enlargement does - it follows the guideline that puberty has already set out. This means you can finally change your size and grow to how you want to be!If you have tried all of these tips for erectile dysfunction treatment and they don't work, it might be beneficial to try some natural male enhancement supplements. This type of way to treat ED is fairly new compared to the old ways of medication, but work very well for far less money. Additionally, they don't have much side effects.