Do not take more or less of it or take it more often than prescribed by your doctor. The enlarged prostate interferes with the normal flow of urine from the bladder and urinary tract, resulting in lower urinary tract symptoms, such as trouble urinating. The results showed the combination to be even more effective than either medication alone. Cialis was also investigated in combination with finasteride, another BPH medication, in another trial. For this purpose, one dose works for up to 72 hours. Take tadalafil exactly as directed.Cialis is used to treat erectile dysfunction (impotence) and symptoms of benign prostatic hypertrophy (enlarged prostate). Another brand of tadalafil is Adcirca, which is used to treat pulmonary arterial hypertension and improve exercise capacity in men and women. Do not take Cialis while also taking Adcirca, unless your doctor tells you to. How it works Uses Cialis and alcohol How to take Interactions Cost Pregnancy Breastfeeding Precautions Overdose Expiration Questions for your doctor About Cialis Cialis is a brand-name prescription drug. It’s approved by the Food and Drug Administration (FDA) to treat the conditions below in adult males.* Benign prostatic . Cialis form and strengths ( mg, 5 mg, 10 mg, 20 mg) Cialis comes as oral tablets that are available in four strengths: milligrams (mg), 5 mg, 10 mg, and 20 mg. Recommended dosage for.