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With Viagra get an erection most powerful. Cheap generic viagra (sildenafil) has the safety and effective of global recognition and acts about 45 minutes after the first intake.
Oral treatment
The cyclic nucleotide phosphodiesterases constitute a group of enzymes that catalyse the hydrolysis of the cyclic nucleotides cyclic AMP and cyclic GMP. They exist in different molecular forms and are unevenly distributed throughout the body.
One of the forms of phophodiesterase is termed PDE5. The prescription PDE5 inhibitors sildenafil (Viagra), vardenafil (Levitra) and tadalafil (Cialis) are prescription drugs which are taken orally. They work by blocking the action of PDE5, which causes cGMP to degrade. CGMP specific phosphodiesterase type 5 causes the smooth muscle of the arteries in the penis to relax, allowing the corpus cavernosum to fill with blood.
These medications work when there is sexual stimulation. Depending on the treatment, it will need to be taken 20 minutes to 1 hour before sex and the period of time over which it works can vary between 3 hours and up to 36 hours.
Other articles from the section: Erectile Dysfunction
Alternative treatment methods
Numerous alternative therapies are used to improve sexual function. Some include: niacin, zinc, copper, Korean red ginseng root, ginkgo, pine bark, Tribulus terrestris, arginine, Avena sativa, horny goat weed, maca root, muira puama, saw palmetto, and Swedish flower pollen. None of these however have been recognized as effective by the FDA. While zinc deficiency may be a cause of lower testosterone levels in hemodialysis patients, which may benefit from ...Section: Erectile Dysfunction
Overview and symptoms
Erectile dysfunction is characterized by the regular or repeated inability to obtain or maintain an erection. There are several ways that erectile dysfunction is analyzed: Obtaining full erections at some times, such as when asleep (when the mind and psychological issues, if any, are less present), tends to suggest the physical structures are functionally working. However, the opposite case, a lack ...Section: Erectile Dysfunction
Treatment
Treatment depends on the cause. Testosterone supplements may be used for cases due to hormonal deficiency. However, the cause is more usually lack of adequate penile blood supply as a result of damage to inner walls of blood vessels. This damage is more frequent in older men, and often associated with disease, in particular diabetes. Treatments (with ...Section: Erectile Dysfunction