Cialis by Eli Lilly and ICOS and Viagra by Pfizer are two drugs with similar action of treating impotence in men. The two drugs have similar action but are quite dissimilar in their chemical structure. The two drugs have different side effects and need to be carefully looked into before consumption.
Cialis is chemically known as Tadalafil and obtained its approval from the Food and Drug Administration in 2003. The drug is also used for the treatment of pulmonary arterial hypertension in men and women by the name of Adcirca. Viagra is also known as Sildenafil Citrate, and was obtained approval by the Food and Drug administration in 1998. This drug is also used for the treatment of pulmonary arterial hypertension.
The two drugs although have the same effect, the two drugs differ in their period of action. Cialis is effective for up to 17 to 36 hours, but Viagra is effective for up to 4 to 5 hours. The drugs also differ in their side effects with the side effects of Cialis including headache flushing, back pain, muscle pain and indigestion. Viagra’s side effects include impaired vision, facial flushing, head ache, indigestion and dyspepsia. Cialis is known to have lower side effects than Viagra and is becoming quite popular among recreational users who suffer from no impotency. It is however recommended to try both of the drugs before settling on one as a permanent impotency drug of choice. In terms of cost, both drugs come close in cost effectiveness over the long run, since Viagra costs less and is effective for 4 to 5 hours, but a single pill of Cialis can last for up to 3 days.
