Silagra 100 mg contains Sildenafil Citrate, the same active ingredient found in Viagra, and is primarily used to treat erectile dysfunction (ED) in men. ED can often be linked to aging, as natural changes in the body, such as decreased blood flow, hormonal changes, or underlying health issues, can contribute to difficulty achieving or maintaining an erection. As men age, blood vessels may become less flexible, and blood flow to the penis can be reduced. Silagra 100 mg works by inhibiting the enzyme PDE5, which improves blood flow to the penis during sexual arousal.