Tadalafil is sometimes taken as needed, usually at least 30 minutes before sexual activity and not more often than once every 24 hours. BPH occurs when the prostate and the surrounding tissues become enlarged. Side Effects and Precautions Every Rose has its Thorn While Cialis promises a multitude of benefits, it’s essential to approach it with a discerning mind. Interestingly, Cialis has been more linked to improved self-esteem and other psychological factors than the other PDE5 medications. Cialis is a brand-name prescription medication.Cialis. Cialis 40/20mg, packs of 10 – Pills. The sexual enhancer Cialis is mainly used by men with medically diagnosed erectile dysfunction. This is when the erection is not sufficient for satisfactory sexual intercourse. The drug requires a prescription and is only dispensed in pharmacies against a prescription. Check Price. For example, Cialis for erectile dysfunction (ED) may be taken daily or as needed. If you’re taking Cialis mg daily for ED versus 20 mg as needed before sexual activity, your cost may be.  · For daily use of Cialis for ED, the usual starting dosage is mg per day. If this dosage isn’t effective for you, your doctor may increase your dosage to 5 mg per day. Cialis and Cost.