Megalis is a generic drug for the ED treatment Cialis. It is mainly used as a treatment for erectile dysfunction. Megalith (Cialis) has the following features compared to conventional ED treatments (Viagra, Levitra). After taking it, the erection power lasts for about 36 hours. Not easily affected by food and alcohol. It has a natural feel and has few side effects such as hot flashes and palpitation. Due to the above characteristics, it is a medicine that you do not have to worry about the timing of administration or the duration of effect. The active ingredient tadalafil blocks the action of enzymes that block erections. By inhibiting it, it increases blood flow to the corpus cavernosum. If you have sexual arousal or irritation after taking it, the action will start and you will get a strong erection.