Manforce is a prescription drug, used in the treatment of male impotence, which is also known as erectile dysfunction. Manforce has Sildenafil Citrate, the key ingredient of generic Viagra. The drug helps increase the blood flows in the male reproductive organ by relaxing the blood vessels. The erectile tissue, when filled with blood, causes erection when the person is sexually excited. Manforce 100mg pills are effective for long duration in bed. After having Manforce 100mg pill, a person achieves maximum hardness within 20 to 30 minutes, given that the medicine is taken empty stomach. Apart from its effectiveness in ED, sildenafil citrate is also used by sportsperson, body builders and wrestlers to boost their performance.