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Cialis (Tadalafil) is an oral drug, used for treating male impotence, also known as erectile men's erectile dysfunction. Cialis' effect starts working in 30 minutes and lasts for about 48 hours, while Viagra effect lasts for about 4 hours. Cialis is to be taken with or without food.
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Cialis tablets, in 5 mg, 10 mg, and 20 mg doses, are yellow, film-coated, and almond-shaped. It initially was developed by the biotechnology company ICOS, and then again developed and marketed world-wide by Lilly ICOS, LLC, the joint venture of ICOS Corporation and Eli Lilly buy cialis online and Company. Cialis\'s 36-hour effectiveness earned it the nickname, "The Weekend Pill"; like sildenafil and vardenafil, tadalafil is recommended as an 'as needed' medication. The approved dose for pulmonary arterial hypertension is 40 buy cialis online mg, and will be marketed under the brand name Adcirca. Moreover, tadalafil was approved in May 2009 in the United States for the treatment of pulmonary arterial hypertension and is currently under regulatory review in other regions for this condition. Tadalafil is a PDE5 inhibitor, currently buy cialis online marketed in pill form for treating erectile dysfunction (ED) under the name Cialis; it has recently been buy cialis approved for the treatment of pulmonary arterial hypertension, and has been used for other conditions. In late November 2008, Eli Lilly sold the exclusive rights to commercialize tadalafil for pulmonary arterial hypertension in the United States to United Therapeutics for buy cialis an upfront payment of $15. In December 2009, the Food and Drug Administration approved tadalafil (as Cialis) for sale in the United States buy cialis online as the third ED prescription drug pill (after sildenafil citrate (Viagra) and buy cialis vardenafil (Levitra)). Cialis is the only one of the three that is also offered as a once-daily medication.

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