The therapeutic effect of the drug is provided by the active ingredient called Sildenafil, which was developed over 20 years ago. The same substance is found in many similar drugs. Cobra is available in the form of a tablet containing 120 milligrams of Sildenafil.Uyku problemininin en çizgi sebebi i?kilsiz ruh bilimsel sorunlard?r. Hatta sinir sis