Cobra 120 is one of the most popular sildenafil generics on the request that's used to cure manly sexual problem erectile dysfunction. The cure is suitable for treating the first signs of incompetence. The active component of COBRA 120 mg is 120 mg of sildenafil citrate. It belongs to the class of drugs known as PDE- 5 impediments. Sildenafil increases blood inflow to the penis following sexual stimulation and does this by blocking the enzyme responsible for camps breakdown.