Never heard of Pro Viagra as such. If you mean to say generic Viagra,then

1] Both generic and 비아그라 구매 brand Viagra gives same effect, both differ in price. Generic Viagra is cheap while brand 비아그라 100mg is costly.

2] You require prescription for 비아그라 구매 brand Viagra while generic doesn't require prescription.

3] Generic Viagra has more chance of showing side effect, 정품 비아그라 while brand has less because you acquire Viagra prescription once doctor recommend you based on your health for 비아그라 구매 brand Viagra.