Cialis – erectile dysfunction treatment
Cialis is a drug that was released in 2003 for the treatment of erectile dysfunction. It works by relaxing the muscles inside the walls of the blood vessels, which in turn helps increase blood-flow to the penis, which in turn helps the patient achieve an erection following sexual stimulation.
Cialis is marketed in tablet form, in doses of 5mg, 10mg and 20mg, which should be taken no more than once a day. Cialis can be effective for up to 36 hours, earning it the nickname, ‘the weekend pill’, which when compared to the four-hour effectiveness of Viagra, makes it plain to see why many prefer it.
Cialis is a trade name of the PDE5 inhibitor known as Tadalafil, which was originally manufactured by biotechnology company, ICOS and then further developed through a joint venture with them and Eli Lilly and company. However, as of 2007, it is only possible for pharmaceutical companies to buy Cialis through Eli Lilly, as they bought out ICOS, thus becoming sole owners of the drug.