Tadalafil (Generic Cialis) from Canada is taken orally and helps men suffering from erectile dysfunction achieve and maintain an erection. Canadian Generic Cialis Tadalafil works in much the same way as Sildenafil Citrate (Generic Viagra), but is much faster, lasting up to 36 hours. Generic Cialis from Canada or Canadian Tadalafil was initially introduced into Europe, and is now available worldwide. Generic Cialis (Tadalafil) is used for treating erectile dysfunction in men (e.g., impotence). Comparing with Viagra, Cialis works in as quickly as 30 minutes and lasts for about 36 hours while Generic Viagra effect lasts up to 5 hours.Besides, according to the scientific results, Cialis is not affected by food or beverages.