Tadalista contains the active substance Tadalafil, which belongs to the group of drugs called phosphodiesterase type 5 (PDE5) inhibitors. It significantly improves sexual function by helping to relax the blood vessels in the penis and thus provide blood flow. This generic medicine controls penile failures efficiently. The overall blood circulation is enhanced with the elevation in nitric oxide. This way abundant amount of blood is supplied to the male organ for an erection.