Cialis

Tadalafil (Cialis®) is a drug used to treat male erectile dysfunction (impotence), developed by the biotech ICOS. The generic name for this compound is tadalafil. The tablet are yellow and oval-shaped. Cialis's main selling points: It works for up to 36 hours after being swallowed and can be taken with or without food. It has the same mode of action as Viagra®, and Levitra.

Men taking nitrates or or alpha blockers are not supposed to take Cialis because it could cause blood pressure problems. Some of the side effects of the drug include back ache, stomach ache, muslce aches, or headaches. The company advises that in the rare event that an erection lasts for more than four hours that the man should seek emergency medical attention.

Eli Lilly, of Indianapolis, and ICOS, of Bothell, Washington, will sell Cialis in the United States for a wholesale price of $8.10 a pill.

Cialis has a multiyear promotional deal with professional golf.

Cialis has FDA approval and appeared in U.S. stores in December, 2003.