Viagra (sildenafil) and other similar products (Levitra and Cialis) are in the class of drugs known as phosphodiesterase type-5 (PDE5) inhibitors. When sildenafil failed to qualify as a product in the antihypertensive market, penile erection, one of its side effects, was used as an opportunity to market it as something that was never before offered, for a condition never medicinally treated before. Suddenly, impotence became a dysfunction called erectile dysfunction and dysfunction meant a medical abnormality that warranted treatment.
The biochemistry
Nitric oxide (NO) widens blood vessels, thereby increasing circulation, and also inhibits the breakdown of a cyclic guanosine monophosphate (CGM), which controls nitric oxide’s role in vasodilation, by phosphodiesterase. By inhibiting the breakdown of the controlling CGM phosphate, the nitric oxide can continue to vasodilate.
Viagra, a PDE5 inhibitor, took the market by storm when it was first made available. Beca ...
There are many fertility treatments such as intrauterine insemination (IUI) and Pregnyl injection available for a couple having challenges with conception. Dealing with infertility isn’t an easy task and a couple should support each other to lessen the burden. If the situation becomes unbearable, the couple may seek professional help; for example, look for a counselor to offer guidance in the trying period. But you know what; others have made it, why not you?
What is Intrauterine Insemination?
IUI is a simple procedure in which the fertility specialist place sperm in your uterus; in short, it shortens the trip for the sperm to the fallopian tubes for easier fertilization in the presence of a female egg. The procedure is helpful to both men and women. IUI is the preferred treatment under the following conditions:
Donor sperm
Unexplained infertility
Low sperm count
Poor sperm motility
Ejaculation dysfunction and challenges with timing
Hostile cervical mucus ...
