Viagra (Sildenafil citrate) is a drug used to treat erectile dysfunction (impotence) in males and pulmonary arterial hypertension (PAH). Background The pharmaceutical company, Pfizer, originally developed Viagra. In 1006, the FDA approved Viagra as the first drug patented for use of erectile dysfunction in the United States. They are blue, diamond-shaped pills with “Pfizer” marked [...]
Levitra (Vardenafil)
September 9, 2001 By
Levitra (Vardenafil) is a PDE5 inhibitor which is used to treat erectile dysfunction. It can aid in achieving and maintaining an erection during sexual activity. Levitra is similar to Viagra (Sildenafil) and Cialis (Tadalafil) in effect; yet due to its shorter half live is closer in similarities to Viagra. Background Both Bayer Pharmaceuticals and GSK [...]
Cialis (Tadalifil)
September 9, 2001 By
Cialis (Tadalifil citrate), a phosphodiesterase type 5 inhibitor, is used to treat erectile dysfunction (ED) and decreased libido in males. Cialis works by aiding relaxation of blood vessels and increasing blood flow in the penis during sexual arousal, resulting in improved erectile function. Cialis is much longer lasting than Viagra. Effects can be felt anywhere [...]
