Cenforce 100 mg blue pill or tablet increases the blood flow to the penile blood vessel and helps to maintain an erection during a period. This is a sildenafil tablet that works for treating erectile dysfunction in men. Cenforce 100 mg tablet belongs to a group of pharmaceutical medicines known as phosphodiesterase type 5 (PDE5) inhibitors. Cenforce Sildenafil Citrate contains a key ingredient also found in the well-known Viagra Sildenafil.