Erectile dysfunction (ED), also known as impotence, commonly affects sexually mature males. It is a condition marked by the inability to achieve and/or maintain an erection suitable for sexual intercourse. Impotence can be caused by a number of issues such as smoking, alcohol abuse, pelvic trauma, hormonal deficiency, psychological problems, stress, or conditions such as diabetes and cardiovascular disease. When the cause is determined, the proper course of treatment will then be prescribed. These can range from oral prescriptions, direct injections to the penis, psychological counseling, mechanical sex aids or surgery.
One of the most popular oral treatments for erectile dysfunction is sildenafil citrate, which is selling under the brand name Viagra. Approved for use by the United States Food ans Drug Administration (USFDA), Viagra is a prescription oral phosphodiesterase type 5 (PDE5) inhibitor that has become incredibly popular with men who suffer from impotence or erectile dysfunction. It blocks the enzyme known as PDE5, which breaks down the chemicals that cause the erectile response. It also helps the penile muscles to relax, thus allowing it to engorge and stay...