Always discuss with your health care practitioner ALL of the medications you are taking prescription and over-the-counter that way, you can receive the best advice for your own situation. There is also the option to take Cialis as needed. However, it stays in your body for up to 36 hours and can be taken every 24 hours, so it can work for you constantly. The results showed the combination to be even more effective than either medication alone. Phosphodiesterase type 5 PDE5 inhibitors. Oral ED medications are generally well-tolerated, Dr.Comment: Dividing the 40 mg dose over the course of the day is not recommended. Usual Adult Dose for Benign Prostatic Hyperplasia. Once daily use for BPH: 5 mg orally once a day at approximately the same time; Concomitant administration with finasteride: 5 mg orally once a day at approximately the same time, for up to 26 weeks. Tadalafil Brand names: Cialis, Adcirca. Tadalafil. Find out how tadalafil treats erectile dysfunction, pulmonary hypertension and benign prostate enlargement, and how to take it. The drug comes in low-dose versions that can be taken daily. This means you can have sex at any time, rather than needing to take a pill from time to time as needed like other ED brands. The starting dose for daily-use Cialis is milligrams (mg). If that doesn’t work, you can increase your daily dose up to 5 mg.