Working procedure of Tadalis SX acts in the same way as Viagra, by blocking an enzyme called phosphodiesterase-5, or PDE-5. This helps the smooth muscles in the penis relax and widen, which allows for more blood to enter.
As a result, you gain erections faster and easier with Tadalis SX. In a normal situation when a man is sexually excited then at that time his penis is filled up with the blood. But when a man suffers from Erectile Dysfunction then due to this problem man is not able to get a proper erection because improper blood flows into his penis.
Thus, this drug relaxes the blood vessels when a man wants to enjoy sex. And due to this more blood flow into the penis and hence results in a harder erection. Please note that it works only when a man is sexually excited.