Sildenafil Citrate is a chemical component that belongs to a group of PDE5 inhibitor drugs. It directly works on the enzyme present in the penis responsible for providing the penis a firm erection. 

Just like other medicines, Sildenafil Citrate is the chemical component present in other branded erectile dysfunction pills, such as Cenforce and Sildenafil Citrate. It is one of the most commonly prescribed chemical salt for the treatment of erectile dysfunction in men.