Tadalafil, sold under the brand name Cialis among others, is a medication used to treat erectile dysfunction, benign prostatic hyperplasia, and pulmonary arterial hypertension. It is taken by mouth. Onset is typically within half an hour and the duration is up to 36 hours. Common side effects include See more.In addition, prostate cancer and BPH may coexist. Consume Cialis orally with water. Remember that this wikiHow quiz is informational, and your results should not be considered a medical diagnosis. The first is that, because of the lower dosage, it often takes several days to become fully effective. BPH is commonly referred to as benign prostate enlargement or simply enlarged prostate.WebCialis is a PDE5 inhibitor, a drug designed to treat erectile dysfunction (ED). It is a selective inhibitor of cyclic monosphosphate (cGMP)-specific phosphodiesterase type 5. Cialis was approved by the FDA in It’s generic name is Tadalafil and is recommended as an “as needed” medication. It is among the five FDA approved drugs that can be. WebJun 26, · CIALIS for Use as Needed. Creatinine clearance 30 to 50 mL/min: A starting dose of 5 mg not more than once per day is recommended, and the maximum dose is 10 mg not more than once in every 48 hours. Creatinine clearance less than 30 mL/min or on hemodialysis: The maximum dose is 5 mg not more than once in every 72 hours [see . WebBest prices for generic cialis on the Internet! The safest way is to ask your physician to try an alternate prescription. Detailed dosage guidelines and administration information for Cialis (tadalafil). Includes dose adjustments, warnings and .There have been rare reports of prolonged erections greater than 4 hours and priapism painful erections greater than 6 hours in duration for this class of compounds. Like the other details of your sex life, what works for you will be unique to your needs. Do not double doses. A bigger disadvantage of as-needed Cialis is the higher dosage. In , Pfizer scientists discovered that sildenafil, which also inhibits the PDE5 enzyme, caused penile erection in men participating in a clinical study of a heart medicine. Using this medicine with any of the following is usually not recommended, but may be unavoidable in some cases.