The medication Cenforce 25 (Sildenafil Citrate) is prescribed to males 18 to 65 years old. Cenforce 25 (Sildenafil Citrate) is a medication commonly known as Sildenafil and is available as blue tablets. Sildenafil citrate is an erection booster and has been proven to keep erections over time. Increasing the blood flow to the stimulated area is one way in which the drug accomplishes this.