Tadalafil is the trade name of Tadalafil, which was discovered by Glaxo Wellcome, which is now popularly known as GSK or GlaxoSmithKline. It'd become available in the market on November 21, 2003. It's an oral medication made to take care of impotency. Compared to Blue Pill, Cialis continues as long as 48 hours and can currently take effect after thirty minutes, where as Blue Pill its effect typically lasts for just 4 hrs. You should completely stick to the program even if the physician prescribes you tadalafil. Never.