there are herbs out there that will improve the quality of your erection 'slightly' but if they worked really well, would viagra , levitra , and cialis have to be invented obviously no. Pills that make your dick bigger, hell no there are just a major market trying to get insecure guys money, cause they are worried about their size. Usually the dick bigger pills are a combo of herbs that will, increase blood flow (a tiny bit) and cause your body to produce more testosterone ( a tiny bit) and the combo of the two will increase flacid size ( a tiny bit) and give you slightly better quality of erections. The problem is they charge TONS more than the herbs would cost on their own. IF they offer a guarantee there are so many loopholes in it, you won't ever collect. So in short don't buy them, they barely do anything and cost way too much.