With PAH, high blood pressure develops when a blockage in the arteries within the lung limits normal blood flow. Brand-name versions of the drug approved for PAH include Adcirca. Men with poor liver function may need lower doses of Cialis Tadalafil. This is a rare condition that more likely to occur if you have heart disease, high blood pressure, High Cholesterol, Diabetes, or eye problems, if you are more than 50 years old, or if you smoke. The penis is one of the areas where this enzyme works.Brand-name Cialis: $ per month (5mg) Generic Cialis (tadalafil): starting at $40 per month (5mg, 10mg, 20mg) Daily generic Cialis (tadalafil): starting at $40 per .  · Adcirca Cialis Descriptions Tadalafil is used to treat men who have erectile dysfunction (also called sexual impotence). Tadalafil belongs to a group of medicines . Cialis is a prescription medication containing the active ingredient tadalafil. Cialis belongs to a group of medications known as phosphodiesterase-5 (PDE-5) .