January 9, 2021 6:04 pm Published by

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True Viagra is a world famous brand containing sildenafil, which pioneered the development of a number of drugs for the treatment of erectile dysfunction. Viagra was, is and will always be the most recognized erection enhancement drug, despite the fact that there are already many cheaper, stronger and safer pills available. Nevertheless, many men, in anticipation of sex, ask themselves the question: “Where can I buy cheap Viagra online and without a doctor’s prescription?”

Instructions for use

Viagra can be purchased online in doses of 25, 50 and 100 mg. Tablets are common for oral administration and fast-acting (dispersible), absorbed in the mouth.

The mechanism of action of Viagra is based on the suppression of PDE-5 activity by sildenafil. This leads to the prevention of the breakdown of the enzyme cGMP in the cavernous bodies of the penis and the accumulation of this substance. Since cGMP relaxes smooth muscles, an increase in its concentration leads to an expansion of the vascular lumen. By increasing blood flow to the penis, an erection occurs.

A small amount of PDE-5 is present in platelets, vascular walls and internal organs. Due to this, taking sildenafil is able to reduce blood clotting, prevent the development of vasospasm.

Viagra in relation to phosphodiesterase-5 is much more active in comparison with other forms of PDE, due to which it practically does not affect other organs and systems. The binding of sildenafil to PDE-6 can lead to color impairment.

Most often, Viagra is used for various erectile dysfunction in order to improve the blood supply to the corpora cavernosa of the penis.

Another indication for the use of this drug is high blood pressure in the pulmonary circulation. Sildenafil promotes vasodilation of the pulmonary artery basin, thereby reducing pulmonary hypertension.

There are absolute and relative contraindications for taking Viagra. The absolute ones include:

  • Individual intolerance to sildenafil itself or Viagra;
  • Taking nitrates.

Since nitrates (nitroglycerin, Nitrogranulong, Nitrosprey, Isoket, Isosorbide dinitrate, etc.) contribute to vasodilation, with the simultaneous use of Viagra, a sharp drop in blood pressure is possible up to loss of consciousness and shock.

Viagra can cause the following undesirable reactions:

  • Pain in the head area;
  • Feeling of hot flashes, facial redness;
  • Digestive upset;
  • Nasal congestion;
  • Development of urinary tract infections;
  • Change in color perception;
  • Dizziness;
  • Skin rashes;
  • Drop in blood pressure;
  • Orthostatic hypotension;
  • Heart palpitations.

Where can you buy

If you are looking to find cheap Viagra online, then look at its generics. The fact is that as a brand, the popular blue pills will never go cheap as Pfizer spent many years, money and man-hours developing them. Therefore, buying a generic Viagra will be much more profitable – its manufacturer simply acquired the right to use sildenafil under a different name, without wasting time and effort on development. But remember that it is not uncommon for cheap Viagra generics to perform worse. The manufacturer of the brand will always keep the quality at its best and will never want to tarnish its reputation.

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