There are many safe, reliable online services offering ED prescriptions. 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 may attempt sexual activity at any time between doses. Tadalafil was approved in in the United States for the treatment of pulmonary arterial hypertension [28] and is under regulatory review in other regions for this condition. How should this medicine be used? If you are taking tadalafil for erectile dysfunction, your doctor will probably start you on an average dose of tadalafil and increase or decrease your dose depending on your response to the medication. Tadalafil was found to have similar benefits for lower urinary tract symptoms as the usually prescribed tamsulosin.Cialis is a PDE5 inhibitor, a drug designed to treat erectile dysfunction (ED). It is a selective inhibitor of cyclic monosphosphate (cGMP)-specific phosphodiesterase type 5. Cialis . Tadalafil is a medicine used to treat erectile dysfunction (ED, also called impotence) and problems with urination caused by an enlarged prostate (benign prostatic hypertrophy or BPH). It is sometimes known by its generic name tadalafil, and sometimes known by its trade name, Cialis. There are also other brands of this medicine available. You need a prescription to get Cialis, which you can acquire through your doctor or telehealth sources. Online ordering can be a great alternative if you prefer the .