Cialis daily, taken every day, has a lower dose of 2. Cialis Dosages The most appropriate Cialis dose for you will depend on your needs, your healthcare provider’s assessment and how well you respond to the medication. Cialis and Tadalafil are also prescription-only medicines. Generic Taladafil is available in a variety of shapes and colors as it is produced by several different labs. If you are already taking medication to treat BPH, your doctor may tell you to stop taking your other medication at least one day before starting treatment with tadalafil. You can take tadalafil on its own or with a meal without affecting the amount of time it takes for the medication to start working.Tadalafil (Cialis) is used to treat erectile dysfunction (ED, impotence; inability to get or keep an erection), and the symptoms of benign prostatic hyperplasia (BPH; an enlarged prostate) which include difficulty urinating (hesitation, dribbling, weak stream, and incomplete bladder emptying), painful urination, and urinary frequency and urgency in adult men. About tadalafil Brand names: Cialis, Adcirca. About tadalafil. Tadalafil is a medicine used to treat erection problems (erectile dysfunction) and symptoms of an enlarged prostate (benign prostate enlargement). It’s also sometimes used to treat pulmonary hypertension (high blood pressure in the blood vessels that supply the lungs). シアリスの成分「タダラフィル」の効果. 陰茎の海綿体には多くのPDE-5（5型ホスホジエステラーゼ）が存在していますが、通常時に勃起していないのはこのPDE-5の働きによるものです。. しかし、何らかの原因でPDE-5が増え過ぎると、勃起したいときにでき.