Benign prostatic hypertrophy is a condition in which the prostate gland becomes enlarged, obstructing the free flow of urine. The safety and effectiveness of Cialis when used with other treatments for impotence has not been studied. How can I buy tadalafil? Taking tadalafil alone is not enough to cause an erection. Brand and best quality generic drugs. You will still need to be sexually stimulated to be able to get an erection and maintain it.Transfer your prescription for Cialis (Brand for Tadalafil, Oral Tablet) on Amazon Pharmacy. FREE SHIPPING for Prime members. 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. Tadalafil (Cialis) Daily has two dosages mainly the mg variant and the 5 mg variant. Typically, males start by taking the 5 mg tablet and adjust accordingly. You can reduce the dosage if you experience the side effects since this means that the 5 mg is too strong for you. Hour has two doses: the 10 mg and 20 mg.