The treatment of erectile dysfunction or impotence has become very simple these days due to the availability of an array of anti-impotence medications. However, two decades earlier the situation was completely different. The treatment of erectile dysfunction or impotence in those days was mainly dependent on herbal medications that actually increased male libido. It was considered that due to lack of libido a person fails to maintain an erection and these herbal supplements increased male libido.

It wasn’t known until 1983 that erectile dysfunction is caused mainly due to physical problems rather than psychological. The scientific experimentations pointed out that in 80% cases due to lack of blood flow in the penis men faced difficulties in getting or maintaining an erection. Thanks to the scientists employed under the Pfizer Inc., by 1993, it was proved that sildenafil can be used safely to increase blood flow in the penis. However, it took another five years to receive the FDA approval and in March 1998 this chemical, under the brand name Viagra, was made available as a prescription medication to cure erectile dysfunction.

The popularity of Viagra pills reached its culmination within the next two years. Statistical references show that Viagra captured 92% of the market of prescribed impotence treatment medications in 2000. Irrespective of the introduction of other prescription anti-impotence medications since 2003 onwards, 50% of the global market share still belongs to sildenafil (Viagra). Physicians prescribe the right Viagra dosage (25mg, 50mg or 100mg) with strict consideration of the nature of your physical condition and impotence.