Cialis belongs to a group of drugs called phosphodiesterase type 5 inhibitors. This article describes the dosages of Cialis, as well as its strengths and how to take it. Cialis (tadalafil) is a prescription tablet used for erectile dysfunction and benign prostatic hyperplasia. Learn about dosage, side effects, and more. When therapy for BPH is initiated with CIALIS and finasteride, the recommended dose of CIALIS for once daily use is 5 mg, taken at approximately the same time every day for up to 26 weeks. For people who have ED and BPH (ED/BPH), the recommended starting dose of tadalafil is 5 mg. You’ll usually take this once daily. This is also the maximum recommended dosage. For PAH, the. Cialis relaxes muscles of the blood vessels and increases blood flow to particular areas of the body. Cialis is used to treat erectile dysfunction (impotence) and symptoms of benign prostatic hypertrophy (enlarged prostate). The usual Cialis dosage for ED ranges from 5 mg to 20 mg by mouth, taken at least 30 minutes before sex. There’s also an option to take Cialis every day for ED. For BPH, the typical Cialis dosage is 5 mg by mouth once daily. Cialis is widely available as a lower-cost generic. In combination with sexual stimulation, tadalafil works by increasing blood flow to the penis to help a man get and keep an erection. Tadalafil is also used to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH). When therapy for BPH is initiated with CIALIS and finasteride, the recommended dose of CIALIS for once daily use is 5 mg, taken at approximately the same time every day for up to 26 weeks. Cialis is not covered by most Medicare and insurance plans, but manufacturer and pharmacy coupons can help offset the cost. Get Tadalafil (Cialis) for as low as $12.00, which is 94% off the average retail price of $193.64 for the most common version, by using a GoodRx coupon. Typical dosage for ED/BPH: One 5-mg tablet every day. When to take your dose: Take this drug at about the same time each day. Don’t take tadalafil more than once per day.