Viagra is a medication known as a brand called sildenafil. Viagra or sildenafil is a medication used to treat cases of erectile dysfunction, as well as pulmonary arterial hypertension. Erectile dysfunction is also known as impotence. It is a kind of sexual dysfunction that means a male individual is unable to develop or maintain an erection of the penis during the course of sexual activity. Erectile dysfunction can have psychological consequences, which can lead to relationship difficulties and issues with positive self-image.
Viagra is a small blue pill in a diamond shape with the word Pfizer indented on the side of the pill. Viagra is made in 25 mg, 50 mg, and 100 mg. Individuals who want to take Viagra usually start with a dose of 50 mg as needed around 1 hour prior to sexual activity. Individuals can increase or decrease dosage based on effectiveness and tolerability. Viagra is recommended to be taken only one time per day.
Viagra or Sildenafil works by inhibiting a chemical known as cGMP-specific phosphodiesterase type 5 (or PDE5), which is an enzyme that promotes the degradation of cGMP, the chemical that regulates the amount of blood flow into the penis. Nitric oxide in the corpus cavernosum of the penis connects to the guanylate cyclase receptors, which leads to an increase in cGMP levels, causing smooth muscle relaxation of the internal cushions of the helicine arteries. This relaxation allows an increase flow of blood into the spongy tissue of the penis that leads to an erection.
Viagra is also known to treat pulmonary hypertension, as well as Raynaud’s phenomenon and high-altitude pulmonary edema. Its nonmedical uses also include recreational use, jet lag research, sports, and analogs.
Viagra side effects
Common side effects of Viagra or Sildenafil include headaches, heartburn, flushing of the skin, indigestion, nasal congestion, and impaired vision. Some individuals have complained of seeing everything in a blue tint. Some suffer from blurriness and loss of peripheral vision. Rare but serious adverse effects include prolonged erections, severe low blood pressure, ventricular arrhythmias, myocardial infarction (also known as a heart attack), stroke, increased intraocular pressure, and sudden hearing loss. It is warned that those suffering from cardiovascular disease use Viagra with severe caution. Viagra should not be taken by individuals who take nitrates such as nitroglycerin, as it has the potential to lead to a severe and possibly fatal drop in blood pressure.
Viagra or Sildenafil is to be taken by mouth prior to any sexual activity. Viagra does not cause an erection on its on, sexual stimulation is needed to produce an erection. Average time to onset of erections range from 12 to 70 minutes, with an average time being 27 minutes. If Viagra is used under the tongue, results can be seen in 15 minutes and last for an average of 40 minutes. Viagra also produces a mouth spray that creates even faster onset.
Generic Viagra in Australia
It is important to note that generic Viagra is generally cheaper, but can contain substances that affect how Viagra works. Viagra is one of the most popular generic medications in the world. In a Pfizer study, around 80% of sites claiming to sell Viagra were selling generic Viagra.
For countries like Australia, Drugs can be purchased online at stores such as www.viagra.com, but caution should be taken.