Vardenafil is related closely to Sildenafil and Tadalafil. However, comparatively it has a short effective time and gives less instance to failure. People who have tried Levitra have almost always pointed out that on the very first attempt Levitra worked for them, unlike other erectile dysfunction drugs. Levitra is a Vardenafil hydrochloride tablet. It is a potent molecule that needs patients to consume a smaller dosage for the same or fuller action. Scientists have pointed out that the ingredient in generic Levitra is stronger than ingredients like Tadalafil and Sildenafil.