viagra canada
Viagra is an oral drug used to treat erectile dysfunction. Many other brands of Sildenafil emerged on the market in the wake of Viagra, including Tadalafil (Cialis), which is the only drug that has been able to compete with Viagra in terms of marketing and sales.
Viagra makes it possible for you to maintain an erection by relaxing your muscles and increasing blood flow. An erection is increased when the muscle is relaxed and there’s enough blood flowing to the penis. When blood flow is low, so is the erection. If we increase blood flow, we can keep a stronger erection.
Nitric oxide binds to the guanylate cyclase, which increases cGMP levels. This in turn produces a smooth muscle relaxation, which opens the pathway for increased blood flow. You can find Viagra categorized as a class of drugs known as cGMP-specific phosphodiesterases type 5 or PDE5s.
Important note: The effects of Viagra and other prescription erectile dysfunction drugs are limited to the presence of sexual stimulation. They cannot cause or promote erections without any outside influences. These drugs do not have any effect on one’s sex drive, either. The subject must be sexually aroused for Viagra (or any other drug) to enhance the erection–otherwise, it will not occur. In the case for Viagra, where a person desires sex but is finding it difficult to produce an erection, this drug could help reverse that problem by increasing blood flow to certain parts of the body.
Viagra, a PED5, is only prescribed for people with blood flow issues. However, this will not help those with hormone deficiencies, who may need both PED-5 medications and hormone therapy. Some ED cases are mental-related but not blood flow or hormone related; these cases either require medication to the central nervous system and can’t be fixed with testicular or penile damage.
The side effects of Viagra don’t seem to appear in most men. There’s also the possibility that taking PED5 may result in an erection lasting longer than four hours. This might not be a bad thing if the situation calls for it, but it may be a sign worth consulting with a doctor about.
Viagra is taken orally, in the form of a blue diamond-shaped pill with Pfizer imprinted on one side, and VGR XX on the other. Viagra is available in dosing strengths of 25mg, 50mg and 100mg per tablet. However, many compounding pharmacies also manufacture Sildenafil with varied dosing ranges.
Viagra is typically taken 30-60 minutes before having sex to allow for the best result and the full effect of the pill lasts for 4 hours, on average.
