The impotence treatment Megalis 20 mg medications are preferred by men that want prolonged effectiveness for having spontaneous sexual interactions. These are high-dose medications and their effects run actively in the bloodstream for up to 36 hours or sometimes even more. These are composed using 20mg of the active ingredient Tadalafil which starts its rapid mechanism of action after 15 minutes of consumption. The medicine performs its demonstrated action by reviving the function of clogged and blocked penile blood vessels and augmenting a rich flow of blood to the penile shaft. The medicine provides its intended benefits only during sexual arousal.