· Cialis; Descriptions. Tadalafil is used to treat men who have erectile dysfunction (also called sexual impotence). Tadalafil belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. These medicines prevent an enzyme called .To provide you with the most relevant and helpful information, and understand which information is beneficial, we may combine your email and site usage information with other information we have about you. Do not stop taking tadalafil without talking to your doctor. Do not take a double dose or more than one dose per day to make up for a missed one. BPH occurs when the prostate and the surrounding tissues become enlarged. What should I do if I forget a dose? If you are taking tadalafil to treat erectile dysfunction, you should know that it does not cure erectile dysfunction or increase sexual desire. Cialis is also highly effective in reducing the symptoms of BPH.Cialis (tadalafil) is an orally administered prescription medication used for erectile dysfunction (ED) and pulmonary arterial hypertension (PAH) to reduce . Cialis comes as an oral tablet that’s typically taken once per day or on occasion as needed. The dosage can vary depending on what condition the drug is used .  · Cialis; Descriptions. Tadalafil is used to treat men who have erectile dysfunction (also called sexual impotence). Tadalafil belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. These medicines prevent an enzyme called .What Is Cialis? Interestingly, Cialis has been more linked to improved self-esteem and other psychological factors than the other PDE5 medications. BPH is caused by an enlarged prostate. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. If you become pregnant while taking tadalafil, call your doctor.