Tadalista 10 is a medication primarily used to treat erectile dysfunction (ED) in men. It contains tadalafil as its active ingredient. Tadalafil belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. Tadalafil works by increasing blood flow to the penis during sexual stimulation, thereby facilitating the achievement and maintenance of an erection. It does this by inhibiting the enzyme PDE5, which regulates blood flow in the penis.