You can use Cialis on a daily basis at a lower dosage. You’ll soon start receiving the latest Mayo Clinic health information you requested in your inbox. For treatment of erectile dysfunction as needed : Adults—10 milligrams mg as a single dose, no more than once a day, taken 30 minutes before you think sexual activity may occur. For oral dosage form tablets : For treatment of benign prostatic hyperplasia daily use : Adults—5 milligrams mg as a single dose, no more than once a day, taken at the same time each day. Sexual activity may be a strain on your heart, especially if you have heart disease. For treatment of erectile dysfunction and benign prostatic hyperplasia daily use : Adults—5 milligrams mg once a day, taken at the same time each day, without regard for the timing of sexual activity.What’s the typical dosage? 50 mg: 10 mg as needed or mg daily: 10 mg (5 mg if you’re 65 years or older) Cialis comes in a lower dose than Viagra and can be taken daily. Also, the. Tadalafil (Cialis) is used to treat erectile dysfunction (ED, impotence; inability to get or keep an erection), and the symptoms of benign prostatic hyperplasia (BPH; an enlarged prostate) which include difficulty urinating (hesitation, dribbling, weak stream, and incomplete bladder emptying), painful urination, and urinary frequency and urgency in adult men. Cialis comes as oral tablets that are available in four strengths: milligrams (mg), 5 mg, 10 mg, and 20 mg. Recommended dosage for Cialis. Typically, .