Cialis is currently FDA approved for sale in the USA. The anti impotence drug having recieved the the thumbs up during the second half of 2003. The availability of the erectile dysfunction treatment has led to intensified competition in the multi billion dollar a year US impotence therapy market.
The yellow tadalafil pill is sold in the USA under the brand name Cialis. Having joined the likes of Viagra, the famous blue oral drug that went on sale in 1998, and Bayer Levitra, which became Food and Drug Administration approved & available earlier the same year.
Some American market studies on cialis seem to suggest that around 31 million men over the age of 42 experience some symptoms of impotence. The US sales of Viagra during 2002 were reported at a staggering $1.3 billion.
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