You may take this medicine with or without food. Cialis was also investigated in combination with finasteride, another BPH medication, in another trial. Tadalafil is also used to treat men who have signs and symptoms of benign prostatic hyperplasia BPH. Sorry something went wrong with your subscription Please, try again in a couple of minutes Retry. Alternatively, Cialis may be prescribed as an as-needed treatment for ED, to be taken before sexual activity. When a man is sexually stimulated, his body’s normal response is to increase blood flow to his penis to produce an erection. Tadalafil works on the PDE5 enzyme in the lungs to relax the blood vessels.Tadalafil (Adcirca, Alyq) is an expensive drug used to treat pulmonary arterial drug is less popular than comparable drugs. It is available in both brand and generic versions. Generic tadalafil is covered by most Medicare and insurance plans, but some pharmacy coupons or cash prices may be lower. Tadalafil (Adcirca, Alyq) is an expensive drug used to treat pulmonary arterial hypertension. This drug is less popular than comparable drugs. It is available in both brand and generic versions. Generic tadalafil is covered by most Medicare and insurance plans, but some pharmacy coupons or cash prices may be lower. At the time of publishing, the average cash price of 30, milligram (mg) Cialis tablets is approximately $2,, whereas tadalafil is around $1,, making it far more cost effective. Some.