Learn about Viagra

Viagra is a little diamond shape blue pill manufactured by Pfizer. It has been approved by FDA and regulatory authorities in more than 20 countries for medication used in treating male impotence.

Viagra is the first effective oral therapy available to men with Erectile Dysfunction. Viagra has been used by more than 30 million men worldwide for Erectile Dysfunction.
It works simply by improving the blood flow which is by causing Vasodilatation (increased blood flow) in the arteries supplying the penis.

They are highly effective for men suffering from Erectile Dysfunction, embarrassing condition referred to as (Impotence). Erectile Dysfunction means difficulty in getting an erection hard enough for satisfying sexual intercourse.

Viagra belong to the family of drugs known as PDE-5 inhibitors and pharmacologically as Sildenafil. They have been in general use for over a decade.Despite its reputation in enhancing a men's sexual ability, they have nothing to do with man virility or male hormones like testosterone.

Viagra is not able to treat problems like Premature Ejaculation or Male Hormone Deficiency, these are conditions that have a different aetiology which needs different type of treatments.By understanding what exactly erectile dysfunction is and how viagra works. We will realised that, in the majority of men, erection difficulty arises due to defective blood flow in the arteries supplying the penis.

The famous blue pills have other uses as well, it also regulate the release of Oxytocin upon stimulation. Oxytocin is released through touch, warmth, and affectionate connection such as orgasm.

Oxytocin is created naturally by our body. It acts like a hormone, crosses the blood-brain barrier and circulates throughout the blood stream as well as in the brain to regulate the arousal level of our nervous system.

Oxytocin plays an important part in our sexual lives. Sexual intercourse creates a powerful bond and that oxytocin is released by both men and women during lovemaking. Not only is oxytocin released during orgasm, it also appears to be responsible for causing orgasms in the first place.

Sexual stimulation that increased blood flow

When you are sexually aroused and stimulated, a sequence of chemicals is released into the blood stream and at the same time leads to the release of a hormone called Cyclic GMP that dilate the blood vessels going to his penis.

The blood flows into the spongy tissues of the penis increases size of the organ, it will becomes turgid and erect.

Cyclic GMP could not last long as it will be destroyed by an enzyme called PhosphoDiEsterase or PDE. When this happen the penis will not be turgid and erect anymore.

If the action of this enzyme can be inhibited or suppressed, then the natural production of Cyclic GMP would last longer, blood flow into the penis would enhanced, and we would have a more turgid penis which means a harder erection.

This is where Viagra comes in, it suppress or inhibit the action of PDE. Viagra is known as PDE5 Inhibitors and are very effective medicines for erection problems. But viagra do not give us a spontaneous erection, it is more responsive to natural sexual stimulation and make the penis more erectable.

Sexual stimulation that increased Oxytocin

Viagra will not release the oxytocin hormone on its own but will do so upon sexual stimulation. It is released during orgasm and has been linked to sexual arousal.

Oxytocin release is regulated by an enzyme that acts like a braking system, limiting hormone release by dampening neural excitation of the cells. This same enzyme, phosphodiesterase type 5, also limits blood flow by contracting the muscles around blood vessels. The relaxing smooth muscle increases blood flow which corrects erectile dysfunction and in the posterior pituitary, the cells become more responsive.

The same stimulation will produce more oxytocin release. Oxytocin plays important roles in social interactions and reproduction including triggering uterine contractions and lactation.

Side effects

The most common side effects are headaches and facial flushing. Other reactions include nasal congestion, indigestion and back pain. These side effects are mild and temporary. The most worrying thing about Viagra pills is their ability to widen arteries enough to lower blood pressure. And men who are taking nitrates should not take Viagra pills at the same time.