Cialis (tadalafil) facts. Cialis is the trade name for a drug called Tadalafil. Cialis is one of a class of drugs known as PDE-5 (Phosphodiesterase type 5) inhibitors. Cialis and the other PDE-5 inhibitors can help men with erectile dysfunction (male impotence) by enhancing the erectile response when a man is sexually stimulated. Aside from Cialis, the other drugs in this class are Viagra (Sildenafil) and Levitra (Vardenafil).
This section shows a full list of all the diseases and conditions listed as a possible cause of Excessive yawning in our database from various sources. 1  Aortic dissection. 2  Excessive daytime sleepiness. 3  Heart attack.  Sleep apnea.
Some yawns may result from blood stagnation in the brain. One of the causes of cerebral infarction is a blockage in the brain blood vessels. When this occurs, the flow of blood gets blocked, resulting in the death of tissues in the brain due to decreased amount of oxygen.