Tadarise 20 comes with the tadalafil 20mg that belongs to the PDE-5 inhibitor. Which acts by blocking phosphodiesterase 5 (PDE5), an enzyme that promotes breakdown of cGMP, which decrease blood flow in the penis. So tadalafil can start increasing the level of cGMP which cause a hard erection. The more blood flow will get more stability to maintain erection.
