Zenegra 100mg is one of the most effective treatments for erectile disorder. Zenegra 100 containing the generic component Sildenafil Citrate. Zenegra helps to keep erections for a long time on the bed. Zenegra 100 is the most used medication in the USA, UK, Austalia, Japan, and all around the world. Zenegra medication should be taken 30 minutes to 1 hour to get better results on the bed.