Aurogra 100 mg contains sildenafil 100 mg, a medicine used to treat erectile dysfunction (ED) in men. It belongs to the phosphodiesterase type-5 (PDE-5) inhibitor class. Sildenafil works by increasing blood flow to the penis during sexual stimulation, helping men achieve and maintain an erection. During sexual stimulation, sildenafil helps relax blood vessels in the penis, allowing more blood to flow into the erectile tissue. This supports the natural erection process.