The CIALIS dose for once daily use may be increased to 5 mg, based on individual efficacy and tolerability. The recommended dose of CIALIS for once daily use is 5 mg, taken at approximately the same time every day. 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. 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. 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. 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. By controlling the enzyme, tadalafil helps to maintain an erection after the penis is stroked by increasing blood flow to the penis. Without physical action to the penis, such as that occurring during sexual intercourse, tadalafil will not work to cause an erection. Dosage for ED and BPH 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. Know what Cialis is used for, how to take it, and which side effects to expect when starting it. 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.